23401231537644 has 48 divisors (see below), whose sum is σ = 60767872412800. Its totient is φ = 7787808857808.

The previous prime is 23401231537633. The next prime is 23401231537657. The reversal of 23401231537644 is 44673513210432.

23401231537644 is a `hidden beast` number, since 2 + 3 + 4 + 0 + 1 + 231 + 5 + 376 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 23401231537644.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174955822 + ... + 175089525.

Almost surely, 2^{23401231537644} is an apocalyptic number.

It is an amenable number.

23401231537644 is an abundant number, since it is smaller than the sum of its proper divisors (37366640875156).

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

23401231537644 is a wasteful number, since it uses less digits than its factorization.

23401231537644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350045979 (or 350045971 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 45.

The spelling of 23401231537644 in words is "twenty-three trillion, four hundred one billion, two hundred thirty-one million, five hundred thirty-seven thousand, six hundred forty-four".