2125979741172 has 48 divisors (see below), whose sum is σ = 5967662435840. Its totient is φ = 575453162592.

The previous prime is 2125979741159. The next prime is 2125979741183. The reversal of 2125979741172 is 2711479795212.

It is a happy number.

It is a super-2 number, since 2×2125979741172² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

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, 666032158 + ... + 666035349.

Almost surely, 2^{2125979741172} is an apocalyptic number.

It is an amenable number.

2125979741172 is an abundant number, since it is smaller than the sum of its proper divisors (3841682694668).

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

2125979741172 is a wasteful number, since it uses less digits than its factorization.

2125979741172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332067540 (or 1332067538 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 57.

The spelling of 2125979741172 in words is "two trillion, one hundred twenty-five billion, nine hundred seventy-nine million, seven hundred forty-one thousand, one hundred seventy-two".