9142664931856 has 45 divisors (see below), whose sum is σ = 17900710649031. Its totient is φ = 4523624779776.

The previous prime is 9142664931853. The next prime is 9142664931859. The reversal of 9142664931856 is 6581394662419.

The square root of 9142664931856 is 3023684.

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

It is an interprime number because it is at equal distance from previous prime (9142664931853) and next prime (9142664931859).

It can be written as a sum of positive squares in 4 ways, for example, as 2708934141456 + 6433730790400 = 1645884^2 + 2536480^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9142664931853) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1173185496 + ... + 1173193288.

Almost surely, 2^{9142664931856} is an apocalyptic number.

9142664931856 is the 3023684-th square number.

It is an amenable number.

9142664931856 is a deficient number, since it is larger than the sum of its proper divisors (8758045717175).

9142664931856 is an frugal number, since it uses more digits than its factorization.

9142664931856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15788 (or 7892 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 64.

Multiplying 9142664931856 by its sum of digits (64), we get a square (585130555638784 = 24189472²).

The spelling of 9142664931856 in words is "nine trillion, one hundred forty-two billion, six hundred sixty-four million, nine hundred thirty-one thousand, eight hundred fifty-six".