166125555452 has 12 divisors (see below), whose sum is σ = 290723384616. Its totient is φ = 83061731280.

The previous prime is 166125555443. The next prime is 166125555461. The reversal of 166125555452 is 254555521661.

It is an interprime number because it is at equal distance from previous prime (166125555443) and next prime (166125555461).

It is a junction number, because it is equal to n+sod(n) for n = 166125555397 and 166125555406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177458 + ... + 603110.

It is an arithmetic number, because the mean of its divisors is an integer number (24226948718).

Almost surely, 2^166125555452 is an apocalyptic number.

It is an amenable number.

166125555452 is a deficient number, since it is larger than the sum of its proper divisors (124597829164).

166125555452 is a wasteful number, since it uses less digits than its factorization.

166125555452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523228 (or 523226 counting only the distinct ones).

The product of its digits is 1800000, while the sum is 47.

The spelling of 166125555452 in words is "one hundred sixty-six billion, one hundred twenty-five million, five hundred fifty-five thousand, four hundred fifty-two".