87715492451 has 4 divisors (see below), whose sum is σ = 88296389904. Its totient is φ = 87134595000.

The previous prime is 87715492421. The next prime is 87715492477. The reversal of 87715492451 is 15429451778.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 87715492451 - 2⁶ = 87715492387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87715492393 and 87715492402.

It is not an unprimeable number, because it can be changed into a prime (87715492421) 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, 290448500 + ... + 290448801.

It is an arithmetic number, because the mean of its divisors is an integer number (22074097476).

Almost surely, 2^87715492451 is an apocalyptic number.

87715492451 is a deficient number, since it is larger than the sum of its proper divisors (580897453).

87715492451 is a wasteful number, since it uses less digits than its factorization.

87715492451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580897452.

The product of its digits is 2822400, while the sum is 53.

The spelling of 87715492451 in words is "eighty-seven billion, seven hundred fifteen million, four hundred ninety-two thousand, four hundred fifty-one".