19805452836770 has 8 divisors (see below), whose sum is σ = 35649815106204. Its totient is φ = 7922181134704.

The previous prime is 19805452836731. The next prime is 19805452836787. The reversal of 19805452836770 is 7763825450891.

It can be written as a sum of positive squares in 2 ways, for example, as 19147214317009 + 658238519761 = 4375753^2 + 811319^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 19805452836697 and 19805452836706.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 990272641829 + ... + 990272641848.

It is a 1-persistent number, because it is pandigital, but 2⋅19805452836770 = 39610905673540 is not.

Almost surely, 2^{19805452836770} is an apocalyptic number.

19805452836770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19805452836770 is a deficient number, since it is larger than the sum of its proper divisors (15844362269434).

19805452836770 is a wasteful number, since it uses less digits than its factorization.

19805452836770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980545283684.

The product of its (nonzero) digits is 101606400, while the sum is 65.

The spelling of 19805452836770 in words is "nineteen trillion, eight hundred five billion, four hundred fifty-two million, eight hundred thirty-six thousand, seven hundred seventy".