2157472747512 has 64 divisors (see below), whose sum is σ = 6052316349600. Its totient is φ = 712037203200.

The previous prime is 2157472747457. The next prime is 2157472747519.

2157472747512 is a `hidden beast` number, since 2 + 1 + 57 + 4 + 7 + 2 + 74 + 7 + 512 = 666.

2157472747512 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157472747519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49425213 + ... + 49468844.

Almost surely, 2^{2157472747512} is an apocalyptic number.

It is an amenable number.

2157472747512 is an abundant number, since it is smaller than the sum of its proper divisors (3894843602088).

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

2157472747512 is a wasteful number, since it uses less digits than its factorization.

2157472747512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98894173 (or 98894163 counting only the distinct ones).

The product of its digits is 7683200, while the sum is 54.

The spelling of 2157472747512 in words is "two trillion, one hundred fifty-seven billion, four hundred seventy-two million, seven hundred forty-seven thousand, five hundred twelve".