87879516646 has 8 divisors (see below), whose sum is σ = 132857222400. Its totient is φ = 43593775848.

The previous prime is 87879516617. The next prime is 87879516667. The reversal of 87879516646 is 64661597878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172990921 + ... + 172991428.

It is an arithmetic number, because the mean of its divisors is an integer number (16607152800).

Almost surely, 2^87879516646 is an apocalyptic number.

87879516646 is a deficient number, since it is larger than the sum of its proper divisors (44977705754).

87879516646 is a wasteful number, since it uses less digits than its factorization.

87879516646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345982478.

The product of its digits is 121927680, while the sum is 67.

The spelling of 87879516646 in words is "eighty-seven billion, eight hundred seventy-nine million, five hundred sixteen thousand, six hundred forty-six".