20196088786 has 4 divisors (see below), whose sum is σ = 30294133182. Its totient is φ = 10098044392.

The previous prime is 20196088777. The next prime is 20196088789. The reversal of 20196088786 is 68788069102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16781907025 + 3414181761 = 129545^2 + 58431^2 .

It is not an unprimeable number, because it can be changed into a prime (20196088789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5049022195 + ... + 5049022198.

Almost surely, 2^20196088786 is an apocalyptic number.

20196088786 is a deficient number, since it is larger than the sum of its proper divisors (10098044396).

20196088786 is a wasteful number, since it uses less digits than its factorization.

20196088786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10098044395.

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 20196088786 in words is "twenty billion, one hundred ninety-six million, eighty-eight thousand, seven hundred eighty-six".