787491568864 has 288 divisors, whose sum is σ = 2137015016640. Its totient is φ = 277863505920.

The previous prime is 787491568847. The next prime is 787491568879. The reversal of 787491568864 is 468865194787.

It is a congruent number.

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, 18653572 + ... + 18695740.

It is an arithmetic number, because the mean of its divisors is an integer number (7420191030).

Almost surely, 2^787491568864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 787491568864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1068507508320).

787491568864 is an abundant number, since it is smaller than the sum of its proper divisors (1349523447776).

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

787491568864 is a wasteful number, since it uses less digits than its factorization.

787491568864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42274 (or 42255 counting only the distinct ones).

The product of its digits is 650280960, while the sum is 73.

The spelling of 787491568864 in words is "seven hundred eighty-seven billion, four hundred ninety-one million, five hundred sixty-eight thousand, eight hundred sixty-four".