87051613939 has 16 divisors (see below), whose sum is σ = 90422608320. Its totient is φ = 83705892480.

The previous prime is 87051613937. The next prime is 87051613969. The reversal of 87051613939 is 93931615078.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 87051613939 - 2¹ = 87051613937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87051613937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8183154 + ... + 8193784.

It is an arithmetic number, because the mean of its divisors is an integer number (5651413020).

Almost surely, 2^87051613939 is an apocalyptic number.

87051613939 is a deficient number, since it is larger than the sum of its proper divisors (3370994381).

87051613939 is a wasteful number, since it uses less digits than its factorization.

87051613939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11790.

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 87051613939 in words is "eighty-seven billion, fifty-one million, six hundred thirteen thousand, nine hundred thirty-nine".