87507748139 has 6 divisors (see below), whose sum is σ = 101794727484. Its totient is φ = 75006641220.

The previous prime is 87507748121. The next prime is 87507748151. The reversal of 87507748139 is 93184770578.

It is not a de Polignac number, because 87507748139 - 2⁸ = 87507747883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87507748199) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 892936157 + ... + 892936254.

It is an arithmetic number, because the mean of its divisors is an integer number (16965787914).

Almost surely, 2^87507748139 is an apocalyptic number.

87507748139 is a deficient number, since it is larger than the sum of its proper divisors (14286979345).

87507748139 is a wasteful number, since it uses less digits than its factorization.

87507748139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785872425 (or 1785872418 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 59.

The spelling of 87507748139 in words is "eighty-seven billion, five hundred seven million, seven hundred forty-eight thousand, one hundred thirty-nine".