87439261870 has 32 divisors (see below), whose sum is σ = 159810610176. Its totient is φ = 34438404000.

The previous prime is 87439261849. The next prime is 87439261879. The reversal of 87439261870 is 7816293478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87439261879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1547415 + ... + 1602925.

It is an arithmetic number, because the mean of its divisors is an integer number (4994081568).

Almost surely, 2^87439261870 is an apocalyptic number.

87439261870 is a deficient number, since it is larger than the sum of its proper divisors (72371348306).

87439261870 is a wasteful number, since it uses less digits than its factorization.

87439261870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57936.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 87439261870 in words is "eighty-seven billion, four hundred thirty-nine million, two hundred sixty-one thousand, eight hundred seventy".