20157213611008 has 44 divisors (see below), whose sum is σ = 40303265706900. Its totient is φ = 10076474949632.

The previous prime is 20157213610997. The next prime is 20157213611011. The reversal of 20157213611008 is 80011631275102.

It can be written as a sum of positive squares in 2 ways, for example, as 4776008126464 + 15381205484544 = 2185408^2 + 3921888^2 .

It is a congruent number.

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, 2767068 + ... + 6926116.

Almost surely, 2^{20157213611008} is an apocalyptic number.

It is an amenable number.

20157213611008 is a deficient number, since it is larger than the sum of its proper divisors (20146052095892).

20157213611008 is an equidigital number, since it uses as much as digits as its factorization.

20157213611008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4163802 (or 4163784 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 20157213611008 in words is "twenty trillion, one hundred fifty-seven billion, two hundred thirteen million, six hundred eleven thousand, eight".