20156065102 has 4 divisors (see below), whose sum is σ = 30234097656. Its totient is φ = 10078032550.

The previous prime is 20156065099. The next prime is 20156065109.

20156065102 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20156065109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5039016274 + ... + 5039016277.

It is an arithmetic number, because the mean of its divisors is an integer number (7558524414).

Almost surely, 2^20156065102 is an apocalyptic number.

20156065102 is a deficient number, since it is larger than the sum of its proper divisors (10078032554).

20156065102 is a wasteful number, since it uses less digits than its factorization.

20156065102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10078032553.

The product of its (nonzero) digits is 3600, while the sum is 28.

It can be divided in two parts, 201560 and 65102, that added together give a palindrome (266662).

The spelling of 20156065102 in words is "twenty billion, one hundred fifty-six million, sixty-five thousand, one hundred two".