787991501115 has 48 divisors (see below), whose sum is σ = 1681048544448. Its totient is φ = 332515093248.

The previous prime is 787991501107. The next prime is 787991501183. The reversal of 787991501115 is 511105199787.

It is not a de Polignac number, because 787991501115 - 2³ = 787991501107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 96209764 + ... + 96217953.

It is an arithmetic number, because the mean of its divisors is an integer number (35021844676).

Almost surely, 2^787991501115 is an apocalyptic number.

787991501115 is an abundant number, since it is smaller than the sum of its proper divisors (893057043333).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

787991501115 is a wasteful number, since it uses less digits than its factorization.

787991501115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192427748 (or 192427745 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 54.

The spelling of 787991501115 in words is "seven hundred eighty-seven billion, nine hundred ninety-one million, five hundred one thousand, one hundred fifteen".