187487317053 has 12 divisors (see below), whose sum is σ = 286745308668. Its totient is φ = 117639100800.

The previous prime is 187487317007. The next prime is 187487317067. The reversal of 187487317053 is 350713784781.

187487317053 is a `hidden beast` number, since 1 + 87 + 487 + 31 + 7 + 0 + 53 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 74740451769 + 112746865284 = 273387^2 + 335778^2 .

It is not a de Polignac number, because 187487317053 - 2²⁶ = 187420208189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187487317153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 612703498 + ... + 612703803.

It is an arithmetic number, because the mean of its divisors is an integer number (23895442389).

Almost surely, 2^187487317053 is an apocalyptic number.

It is an amenable number.

187487317053 is a deficient number, since it is larger than the sum of its proper divisors (99257991615).

187487317053 is a wasteful number, since it uses less digits than its factorization.

187487317053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225407324 (or 1225407321 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 54.

The spelling of 187487317053 in words is "one hundred eighty-seven billion, four hundred eighty-seven million, three hundred seventeen thousand, fifty-three".