20796415287 has 32 divisors (see below), whose sum is σ = 31105105920. Its totient is φ = 12296164320.

The previous prime is 20796415267. The next prime is 20796415303. The reversal of 20796415287 is 78251469702.

It is a happy number.

It is not a de Polignac number, because 20796415287 - 2¹⁶ = 20796349751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20796415217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107139 + ... + 230372.

It is an arithmetic number, because the mean of its divisors is an integer number (972034560).

Almost surely, 2^20796415287 is an apocalyptic number.

20796415287 is a deficient number, since it is larger than the sum of its proper divisors (10308690633).

20796415287 is a wasteful number, since it uses less digits than its factorization.

20796415287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337603.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 20796415287 in words is "twenty billion, seven hundred ninety-six million, four hundred fifteen thousand, two hundred eighty-seven".