787998707899758 has 384 divisors, whose sum is σ = 1975329987231744. Its totient is φ = 225590966092800.

The previous prime is 787998707899727. The next prime is 787998707899759. The reversal of 787998707899758 is 857998707899787.

It is a self number, because there is not a number n which added to its sum of digits gives 787998707899758.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787998707899759) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 6983828403 + ... + 6983941233.

It is an arithmetic number, because the mean of its divisors is an integer number (5144088508416).

Almost surely, 2^{787998707899758} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 787998707899758, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (987664993615872).

787998707899758 is an abundant number, since it is smaller than the sum of its proper divisors (1187331279331986).

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

787998707899758 is a wasteful number, since it uses less digits than its factorization.

787998707899758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113460 (or 113457 counting only the distinct ones).

The product of its (nonzero) digits is 2258344488960, while the sum is 108.

The spelling of 787998707899758 in words is "seven hundred eighty-seven trillion, nine hundred ninety-eight billion, seven hundred seven million, eight hundred ninety-nine thousand, seven hundred fifty-eight".