23221637520372 has 36 divisors (see below), whose sum is σ = 59280318893796. Its totient is φ = 7663906771200.

The previous prime is 23221637520343. The next prime is 23221637520383. The reversal of 23221637520372 is 27302573612232.

23221637520372 is a `hidden beast` number, since 2 + 3 + 2 + 2 + 1 + 6 + 375 + 203 + 72 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12298586080356 + 10923051440016 = 3506934^2 + 3305004^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3193290853 + ... + 3193298124.

Almost surely, 2^{23221637520372} is an apocalyptic number.

It is an amenable number.

23221637520372 is an abundant number, since it is smaller than the sum of its proper divisors (36058681373424).

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

23221637520372 is a wasteful number, since it uses less digits than its factorization.

23221637520372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6386589088 (or 6386589083 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 45.

The spelling of 23221637520372 in words is "twenty-three trillion, two hundred twenty-one billion, six hundred thirty-seven million, five hundred twenty thousand, three hundred seventy-two".