787987512128 has 14 divisors (see below), whose sum is σ = 1563662719506. Its totient is φ = 393993756032.

The previous prime is 787987512089. The next prime is 787987512131. The reversal of 787987512128 is 821215789787.

It can be written as a sum of positive squares in only one way, i.e., 488813519104 + 299173993024 = 699152^2 + 546968^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156152375 + ... + 6156152502.

Almost surely, 2^787987512128 is an apocalyptic number.

It is an amenable number.

787987512128 is a deficient number, since it is larger than the sum of its proper divisors (775675207378).

787987512128 is a wasteful number, since it uses less digits than its factorization.

787987512128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12312304889 (or 12312304879 counting only the distinct ones).

The product of its digits is 31610880, while the sum is 65.

The spelling of 787987512128 in words is "seven hundred eighty-seven billion, nine hundred eighty-seven million, five hundred twelve thousand, one hundred twenty-eight".