7012920868864 has 135 divisors (see below), whose sum is σ = 14911221314983. Its totient is φ = 3297486307328.

The previous prime is 7012920868799. The next prime is 7012920868907. The reversal of 7012920868864 is 4688680292107.

The square root of 7012920868864 is 2648192.

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

It can be written as a sum of positive squares in 4 ways, for example, as 114103435264 + 6898817433600 = 337792^2 + 2626560^2 .

It is a super-2 number, since 2×7012920868864² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5762465184 + ... + 5762466400.

Almost surely, 2^{7012920868864} is an apocalyptic number.

7012920868864 is the 2648192-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7012920868864

7012920868864 is an abundant number, since it is smaller than the sum of its proper divisors (7898300446119).

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

7012920868864 is an frugal number, since it uses more digits than its factorization.

7012920868864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2496 (or 1236 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 61.

The spelling of 7012920868864 in words is "seven trillion, twelve billion, nine hundred twenty million, eight hundred sixty-eight thousand, eight hundred sixty-four".