2645447426504 has 8 divisors (see below), whose sum is σ = 4960213924710. Its totient is φ = 1322723713248.

The previous prime is 2645447426471. The next prime is 2645447426507. The reversal of 2645447426504 is 4056247445462.

It can be written as a sum of positive squares in only one way, i.e., 1559996004004 + 1085451422500 = 1248998^2 + 1041850^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2645447426507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165340464149 + ... + 165340464164.

Almost surely, 2^{2645447426504} is an apocalyptic number.

It is an amenable number.

2645447426504 is a deficient number, since it is larger than the sum of its proper divisors (2314766498206).

2645447426504 is a wasteful number, since it uses less digits than its factorization.

2645447426504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330680928319 (or 330680928315 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 53.

The spelling of 2645447426504 in words is "two trillion, six hundred forty-five billion, four hundred forty-seven million, four hundred twenty-six thousand, five hundred four".