20251034742736 has 80 divisors (see below), whose sum is σ = 48129718679424. Its totient is φ = 8056587497472.

The previous prime is 20251034742733. The next prime is 20251034742797. The reversal of 20251034742736 is 63724743015202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20251034742733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72710650 + ... + 72988633.

Almost surely, 2^{20251034742736} is an apocalyptic number.

It is an amenable number.

20251034742736 is an abundant number, since it is smaller than the sum of its proper divisors (27878683936688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20251034742736 is a wasteful number, since it uses less digits than its factorization.

20251034742736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145699388 (or 145699382 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 46.

Adding to 20251034742736 its reverse (63724743015202), we get a palindrome (83975777757938).

The spelling of 20251034742736 in words is "twenty trillion, two hundred fifty-one billion, thirty-four million, seven hundred forty-two thousand, seven hundred thirty-six".