4971378064 has 15 divisors (see below), whose sum is σ = 9632591467. Its totient is φ = 2485548016.

The previous prime is 4971378031. The next prime is 4971378067. The reversal of 4971378064 is 4608731794.

The square root of 4971378064 is 70508.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4971377999 and 4971378017.

It is not an unprimeable number, because it can be changed into a prime (4971378067) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 273219 + ... + 290845.

Almost surely, 2^4971378064 is an apocalyptic number.

4971378064 is the 70508-th square number.

It is an amenable number.

4971378064 is a deficient number, since it is larger than the sum of its proper divisors (4661213403).

4971378064 is an frugal number, since it uses more digits than its factorization.

4971378064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35262 (or 17629 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 49.

The cubic root of 4971378064 is about 1706.7068460457.

Multiplying 4971378064 by its sum of digits (49), we get a square (243597525136 = 493556²).

The spelling of 4971378064 in words is "four billion, nine hundred seventy-one million, three hundred seventy-eight thousand, sixty-four".