87418150653857 has 4 divisors (see below), whose sum is σ = 88191762606660. Its totient is φ = 86644538701056.

The previous prime is 87418150653817. The next prime is 87418150653881. The reversal of 87418150653857 is 75835605181478.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33178475525776 + 54239675128081 = 5760076^2 + 7364759^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87418150653857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87418150653817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386805976232 + ... + 386805976457.

It is an arithmetic number, because the mean of its divisors is an integer number (22047940651665).

Almost surely, 2^{87418150653857} is an apocalyptic number.

It is an amenable number.

87418150653857 is a deficient number, since it is larger than the sum of its proper divisors (773611952803).

87418150653857 is a wasteful number, since it uses less digits than its factorization.

87418150653857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773611952802.

The product of its (nonzero) digits is 225792000, while the sum is 68.

The spelling of 87418150653857 in words is "eighty-seven trillion, four hundred eighteen billion, one hundred fifty million, six hundred fifty-three thousand, eight hundred fifty-seven".