20156544565102 has 8 divisors (see below), whose sum is σ = 32983436561112. Its totient is φ = 9162065711400.

The previous prime is 20156544565097. The next prime is 20156544565169.

20156544565102 is nontrivially palindromic in base 10.

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

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, 458103285549 + ... + 458103285592.

It is an arithmetic number, because the mean of its divisors is an integer number (4122929570139).

Almost surely, 2^{20156544565102} is an apocalyptic number.

20156544565102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20156544565102 is a deficient number, since it is larger than the sum of its proper divisors (12826891996010).

20156544565102 is a wasteful number, since it uses less digits than its factorization.

20156544565102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916206571154.

The product of its (nonzero) digits is 1440000, while the sum is 46.

The spelling of 20156544565102 in words is "twenty trillion, one hundred fifty-six billion, five hundred forty-four million, five hundred sixty-five thousand, one hundred two".