4640647736320 has 88 divisors (see below), whose sum is σ = 11136961716768. Its totient is φ = 1855451136000.

The previous prime is 4640647736299. The next prime is 4640647736327. The reversal of 4640647736320 is 236377460464.

It is a super-2 number, since 2×4640647736320² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4640647736327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11636220 + ... + 12028420.

Almost surely, 2^{4640647736320} is an apocalyptic number.

4640647736320 is a gapful number since it is divisible by the number (40) 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 4640647736320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5568480858384).

4640647736320 is an abundant number, since it is smaller than the sum of its proper divisors (6496313980448).

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

4640647736320 is a wasteful number, since it uses less digits than its factorization.

4640647736320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394537 (or 394519 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 52.

The spelling of 4640647736320 in words is "four trillion, six hundred forty billion, six hundred forty-seven million, seven hundred thirty-six thousand, three hundred twenty".