20567877423 has 16 divisors (see below), whose sum is σ = 28229245440. Its totient is φ = 13310904096.

The previous prime is 20567877419. The next prime is 20567877439. The reversal of 20567877423 is 32477876502.

It is not a de Polignac number, because 20567877423 - 2² = 20567877419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20567877523) 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, 162315 + ... + 259772.

It is an arithmetic number, because the mean of its divisors is an integer number (1764327840).

Almost surely, 2^20567877423 is an apocalyptic number.

20567877423 is a deficient number, since it is larger than the sum of its proper divisors (7661368017).

20567877423 is a wasteful number, since it uses less digits than its factorization.

20567877423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422566.

The product of its (nonzero) digits is 3951360, while the sum is 51.

The spelling of 20567877423 in words is "twenty billion, five hundred sixty-seven million, eight hundred seventy-seven thousand, four hundred twenty-three".