29954899109681 has 16 divisors (see below), whose sum is σ = 36923343652608. Its totient is φ = 23664723825600.

The previous prime is 29954899109677. The next prime is 29954899109687. The reversal of 29954899109681 is 18690199845992.

It is not a de Polignac number, because 29954899109681 - 2² = 29954899109677 is a prime.

It is a super-2 number, since 2×29954899109681² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 29954899109596 and 29954899109605.

It is not an unprimeable number, because it can be changed into a prime (29954899109687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248937365 + ... + 249057666.

It is an arithmetic number, because the mean of its divisors is an integer number (2307708978288).

Almost surely, 2^{29954899109681} is an apocalyptic number.

It is an amenable number.

29954899109681 is a deficient number, since it is larger than the sum of its proper divisors (6968444542927).

29954899109681 is a wasteful number, since it uses less digits than its factorization.

29954899109681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497995712.

The product of its (nonzero) digits is 906992640, while the sum is 80.

The spelling of 29954899109681 in words is "twenty-nine trillion, nine hundred fifty-four billion, eight hundred ninety-nine million, one hundred nine thousand, six hundred eighty-one".