1646325080464 has 45 divisors (see below), whose sum is σ = 3388604281027. Its totient is φ = 774700155392.

The previous prime is 1646325080461. The next prime is 1646325080479. The reversal of 1646325080464 is 4640805236461.

The square root of 1646325080464 is 1283092.

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 1065973651600 + 580351428864 = 1032460^2 + 761808^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1646325080461) 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, 87240822 + ... + 87259690.

Almost surely, 2^{1646325080464} is an apocalyptic number.

1646325080464 is the 1283092-nd square number.

It is an amenable number.

1646325080464 is an abundant number, since it is smaller than the sum of its proper divisors (1742279200563).

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

1646325080464 is an frugal number, since it uses more digits than its factorization.

1646325080464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37780 (or 18888 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 49.

Multiplying 1646325080464 by its sum of digits (49), we get a square (80669928942736 = 8981644²).

The spelling of 1646325080464 in words is "one trillion, six hundred forty-six billion, three hundred twenty-five million, eighty thousand, four hundred sixty-four".