87313864840642 has 48 divisors (see below), whose sum is σ = 151068222192096. Its totient is φ = 37514652033600.

The previous prime is 87313864840639. The next prime is 87313864840661. The reversal of 87313864840642 is 24604846831378.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47112723 + ... + 48930934.

It is an arithmetic number, because the mean of its divisors is an integer number (3147254629002).

Almost surely, 2^{87313864840642} is an apocalyptic number.

87313864840642 is a deficient number, since it is larger than the sum of its proper divisors (63754357351454).

87313864840642 is a wasteful number, since it uses less digits than its factorization.

87313864840642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96043775 (or 96043744 counting only the distinct ones).

The product of its (nonzero) digits is 148635648, while the sum is 64.

The spelling of 87313864840642 in words is "eighty-seven trillion, three hundred thirteen billion, eight hundred sixty-four million, eight hundred forty thousand, six hundred forty-two".