87021467646 has 32 divisors (see below), whose sum is σ = 178818357120. Its totient is φ = 28211880096.

The previous prime is 87021467591. The next prime is 87021467651. The reversal of 87021467646 is 64676412078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486465 + ... + 640851.

It is an arithmetic number, because the mean of its divisors is an integer number (5588073660).

Almost surely, 2^87021467646 is an apocalyptic number.

87021467646 is an abundant number, since it is smaller than the sum of its proper divisors (91796889474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87021467646 is a wasteful number, since it uses less digits than its factorization.

87021467646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156968.

The product of its (nonzero) digits is 2709504, while the sum is 51.

The spelling of 87021467646 in words is "eighty-seven billion, twenty-one million, four hundred sixty-seven thousand, six hundred forty-six".