87456261571 has 16 divisors (see below), whose sum is σ = 100427862528. Its totient is φ = 74604600000.

The previous prime is 87456261551. The next prime is 87456261623. The reversal of 87456261571 is 17516265478.

It is a de Polignac number, because none of the positive numbers 2^k-87456261571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87456261511) 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, 2270271 + ... + 2308471.

It is an arithmetic number, because the mean of its divisors is an integer number (6276741408).

Almost surely, 2^87456261571 is an apocalyptic number.

87456261571 is a deficient number, since it is larger than the sum of its proper divisors (12971600957).

87456261571 is a wasteful number, since it uses less digits than its factorization.

87456261571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39762.

The product of its digits is 2822400, while the sum is 52.

The spelling of 87456261571 in words is "eighty-seven billion, four hundred fifty-six million, two hundred sixty-one thousand, five hundred seventy-one".