20371866723 has 48 divisors (see below), whose sum is σ = 31988436480. Its totient is φ = 12418660800.

The previous prime is 20371866707. The next prime is 20371866737. The reversal of 20371866723 is 32766817302.

It is not a de Polignac number, because 20371866723 - 2⁴ = 20371866707 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20371866763) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13962168 + ... + 13963626.

It is an arithmetic number, because the mean of its divisors is an integer number (666425760).

Almost surely, 2^20371866723 is an apocalyptic number.

20371866723 is a deficient number, since it is larger than the sum of its proper divisors (11616569757).

20371866723 is a wasteful number, since it uses less digits than its factorization.

20371866723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520 (or 2517 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 20371866723 in words is "twenty billion, three hundred seventy-one million, eight hundred sixty-six thousand, seven hundred twenty-three".