20671253431892 has 48 divisors (see below), whose sum is σ = 41848793118720. Its totient is φ = 8751274236000.

The previous prime is 20671253431877. The next prime is 20671253431903. The reversal of 20671253431892 is 29813435217602.

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, 12899984 + ... + 14413607.

It is an arithmetic number, because the mean of its divisors is an integer number (871849856640).

It is a 1-persistent number, because it is pandigital, but 2⋅20671253431892 = 41342506863784 is not.

Almost surely, 2^{20671253431892} is an apocalyptic number.

It is an amenable number.

20671253431892 is an abundant number, since it is smaller than the sum of its proper divisors (21177539686828).

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

20671253431892 is a wasteful number, since it uses less digits than its factorization.

20671253431892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27313932 (or 27313930 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 20671253431892 in words is "twenty trillion, six hundred seventy-one billion, two hundred fifty-three million, four hundred thirty-one thousand, eight hundred ninety-two".