10122553566 has 24 divisors (see below), whose sum is σ = 22639690944. Its totient is φ = 3265339680.

The previous prime is 10122553547. The next prime is 10122553619. The reversal of 10122553566 is 66535522101.

10122553566 is a `hidden beast` number, since 10 + 12 + 25 + 53 + 566 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10122553566.

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, 9069831 + ... + 9070946.

It is an arithmetic number, because the mean of its divisors is an integer number (943320456).

Almost surely, 2^10122553566 is an apocalyptic number.

10122553566 is an abundant number, since it is smaller than the sum of its proper divisors (12517137378).

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

10122553566 is a wasteful number, since it uses less digits than its factorization.

10122553566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18140816 (or 18140813 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 10122553566 in words is "ten billion, one hundred twenty-two million, five hundred fifty-three thousand, five hundred sixty-six".