2157825182112 has 36 divisors (see below), whose sum is σ = 6136315362450. Its totient is φ = 719275060608.

The previous prime is 2157825182111. The next prime is 2157825182137. The reversal of 2157825182112 is 2112815287512.

2157825182112 is a `hidden beast` number, since 2 + 1 + 57 + 82 + 518 + 2 + 1 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1548919637136 + 608905544976 = 1244556^2 + 780324^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (2157825182111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3746223987 + ... + 3746224562.

Almost surely, 2^{2157825182112} is an apocalyptic number.

It is an amenable number.

2157825182112 is an abundant number, since it is smaller than the sum of its proper divisors (3978490180338).

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

2157825182112 is a wasteful number, since it uses less digits than its factorization.

2157825182112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7492448565 (or 7492448554 counting only the distinct ones).

The product of its digits is 179200, while the sum is 45.

The spelling of 2157825182112 in words is "two trillion, one hundred fifty-seven billion, eight hundred twenty-five million, one hundred eighty-two thousand, one hundred twelve".