20155055102 has 32 divisors (see below), whose sum is σ = 37236894912. Its totient is φ = 7967522304.

The previous prime is 20155055093. The next prime is 20155055111.

20155055102 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (20155055093) and next prime (20155055111).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209558 + ... + 290214.

It is an arithmetic number, because the mean of its divisors is an integer number (1163652966).

Almost surely, 2^20155055102 is an apocalyptic number.

20155055102 is a deficient number, since it is larger than the sum of its proper divisors (17081839810).

20155055102 is a wasteful number, since it uses less digits than its factorization.

20155055102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82052.

The product of its (nonzero) digits is 2500, while the sum is 26.

It can be divided in two parts, 201550 and 55102, that added together give a palindrome (256652).

The spelling of 20155055102 in words is "twenty billion, one hundred fifty-five million, fifty-five thousand, one hundred two".