764316272640 has 192 divisors, whose sum is σ = 2447966102400. Its totient is φ = 203588370432.

The previous prime is 764316272539. The next prime is 764316272641. The reversal of 764316272640 is 46272613467.

It is a tau number, because it is divible by the number of its divisors (192).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 764316272640.

It is not an unprimeable number, because it can be changed into a prime (764316272641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28218144 + ... + 28245216.

It is an arithmetic number, because the mean of its divisors is an integer number (12749823450).

Almost surely, 2^764316272640 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 764316272640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1223983051200).

764316272640 is an abundant number, since it is smaller than the sum of its proper divisors (1683649829760).

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

764316272640 is a wasteful number, since it uses less digits than its factorization.

764316272640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28022 (or 28002 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 48.

The spelling of 764316272640 in words is "seven hundred sixty-four billion, three hundred sixteen million, two hundred seventy-two thousand, six hundred forty".