23221607877 has 20 divisors (see below), whose sum is σ = 37357460140. Its totient is φ = 14290219584.

The previous prime is 23221607869. The next prime is 23221607879. The reversal of 23221607877 is 77870612232.

23221607877 is a `hidden beast` number, since 2 + 32 + 2 + 1 + 607 + 8 + 7 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9969223716 + 13252384161 = 99846^2 + 115119^2 .

It is not a de Polignac number, because 23221607877 - 2³ = 23221607869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221607879) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11025352 + ... + 11027457.

It is an arithmetic number, because the mean of its divisors is an integer number (1867873007).

Almost surely, 2^23221607877 is an apocalyptic number.

23221607877 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

23221607877 is a deficient number, since it is larger than the sum of its proper divisors (14135852263).

23221607877 is a wasteful number, since it uses less digits than its factorization.

23221607877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22052834 (or 22052825 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The spelling of 23221607877 in words is "twenty-three billion, two hundred twenty-one million, six hundred seven thousand, eight hundred seventy-seven".