2920311867664 has 45 divisors (see below), whose sum is σ = 5695202410149. Its totient is φ = 1450644240960.

The previous prime is 2920311867661. The next prime is 2920311867689. The reversal of 2920311867664 is 4667681130292.

The square root of 2920311867664 is 1708892.

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., 2405936027664 + 514375840000 = 1551108^2 + 717200^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2920311867661) 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, 1114196274 + ... + 1114198894.

Almost surely, 2^{2920311867664} is an apocalyptic number.

2920311867664 is the 1708892-nd square number.

It is an amenable number.

2920311867664 is a deficient number, since it is larger than the sum of its proper divisors (2774890542485).

2920311867664 is an frugal number, since it uses more digits than its factorization.

2920311867664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5576 (or 2786 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 2920311867664 in words is "two trillion, nine hundred twenty billion, three hundred eleven million, eight hundred sixty-seven thousand, six hundred sixty-four".