87376473821 has 32 divisors (see below), whose sum is σ = 108158668800. Its totient is φ = 68736185280.

The previous prime is 87376473697. The next prime is 87376473851. The reversal of 87376473821 is 12837467378.

It is not a de Polignac number, because 87376473821 - 2²² = 87372279517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87376473851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28012700 + ... + 28015818.

It is an arithmetic number, because the mean of its divisors is an integer number (3379958400).

Almost surely, 2^87376473821 is an apocalyptic number.

It is an amenable number.

87376473821 is a deficient number, since it is larger than the sum of its proper divisors (20782194979).

87376473821 is a wasteful number, since it uses less digits than its factorization.

87376473821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4809.

The product of its digits is 9483264, while the sum is 56.

The spelling of 87376473821 in words is "eighty-seven billion, three hundred seventy-six million, four hundred seventy-three thousand, eight hundred twenty-one".