13166672551620 has 96 divisors (see below), whose sum is σ = 42139873977600. Its totient is φ = 3009059311104.

The previous prime is 13166672551619. The next prime is 13166672551631. The reversal of 13166672551620 is 2615527666131.

It is a happy number.

It is a super-2 number, since 2×13166672551620² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 293946 + ... + 5140014.

It is an arithmetic number, because the mean of its divisors is an integer number (438957020600).

Almost surely, 2^{13166672551620} is an apocalyptic number.

13166672551620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13166672551620 is an abundant number, since it is smaller than the sum of its proper divisors (28973201425980).

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

13166672551620 is a wasteful number, since it uses less digits than its factorization.

13166672551620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4852557 (or 4852555 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 13166672551620 in words is "thirteen trillion, one hundred sixty-six billion, six hundred seventy-two million, five hundred fifty-one thousand, six hundred twenty".