4720694816656 has 405 divisors, whose sum is σ = 11864777656689. Its totient is φ = 1813400918784.

The previous prime is 4720694816611. The next prime is 4720694816657. The reversal of 4720694816656 is 6566184960274.

The square root of 4720694816656 is 2172716.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 698327635600 + 4022367181056 = 835660^2 + 2005584^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4720694816657) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 37170825265 + ... + 37170825391.

Almost surely, 2^{4720694816656} is an apocalyptic number.

4720694816656 is the 2172716-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4720694816656

4720694816656 is an abundant number, since it is smaller than the sum of its proper divisors (7144082840033).

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

4720694816656 is a wasteful number, since it uses less digits than its factorization.

4720694816656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 64.

Multiplying 4720694816656 by its sum of digits (64), we get a square (302124468265984 = 17381728²).

The spelling of 4720694816656 in words is "four trillion, seven hundred twenty billion, six hundred ninety-four million, eight hundred sixteen thousand, six hundred fifty-six".