87942307775 has 18 divisors (see below), whose sum is σ = 126852293880. Its totient is φ = 60303295920.

The previous prime is 87942307711. The next prime is 87942307781. The reversal of 87942307775 is 57770324978.

It is not a de Polignac number, because 87942307775 - 2⁶ = 87942307711 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 35893595 + ... + 35896044.

It is an arithmetic number, because the mean of its divisors is an integer number (7047349660).

Almost surely, 2^87942307775 is an apocalyptic number.

87942307775 is a deficient number, since it is larger than the sum of its proper divisors (38909986105).

87942307775 is a wasteful number, since it uses less digits than its factorization.

87942307775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71789663 (or 71789651 counting only the distinct ones).

The product of its (nonzero) digits is 20744640, while the sum is 59.

The spelling of 87942307775 in words is "eighty-seven billion, nine hundred forty-two million, three hundred seven thousand, seven hundred seventy-five".