2645478597648 has 40 divisors (see below), whose sum is σ = 6834497894496. Its totient is φ = 881781702400.

The previous prime is 2645478597647. The next prime is 2645478597679. The reversal of 2645478597648 is 8467958745462.

It is a super-2 number, since 2×2645478597648² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2645478597648.

It is not an unprimeable number, because it can be changed into a prime (2645478597647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422418 + ... + 2338673.

Almost surely, 2^{2645478597648} is an apocalyptic number.

It is an amenable number.

2645478597648 is an abundant number, since it is smaller than the sum of its proper divisors (4189019296848).

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

2645478597648 is a wasteful number, since it uses less digits than its factorization.

2645478597648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781063 (or 2781057 counting only the distinct ones).

The product of its digits is 3251404800, while the sum is 75.

The spelling of 2645478597648 in words is "two trillion, six hundred forty-five billion, four hundred seventy-eight million, five hundred ninety-seven thousand, six hundred forty-eight".