23220556002 has 90 divisors (see below), whose sum is σ = 58773094497. Its totient is φ = 6625393488.

The previous prime is 23220555971. The next prime is 23220556019. The reversal of 23220556002 is 20065502232.

23220556002 is a `hidden beast` number, since 2 + 3 + 2 + 2 + 0 + 55 + 600 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14994247401 + 8226308601 = 122451^2 + 90699^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=107751.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 31678428 + ... + 31679160.

Almost surely, 2^23220556002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23220556002

23220556002 is an abundant number, since it is smaller than the sum of its proper divisors (35552538495).

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

23220556002 is an frugal number, since it uses more digits than its factorization.

23220556002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Multiplying 23220556002 by its product of nonzero digits (7200), we get a square (167188003214400 = 12930120²).

The spelling of 23220556002 in words is "twenty-three billion, two hundred twenty million, five hundred fifty-six thousand, two".