76307486640 has 320 divisors, whose sum is σ = 297970928640. Its totient is φ = 15692267520.

The previous prime is 76307486617. The next prime is 76307486657. The reversal of 76307486640 is 4668470367.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1771276 + ... + 1813844.

It is an arithmetic number, because the mean of its divisors is an integer number (931159152).

Almost surely, 2^76307486640 is an apocalyptic number.

76307486640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76307486640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148985464320).

76307486640 is an abundant number, since it is smaller than the sum of its proper divisors (221663442000).

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

76307486640 is a wasteful number, since it uses less digits than its factorization.

76307486640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42700 (or 42694 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 51.

The spelling of 76307486640 in words is "seventy-six billion, three hundred seven million, four hundred eighty-six thousand, six hundred forty".