2620497978576 has 100 divisors (see below), whose sum is σ = 7697682888192. Its totient is φ = 860461994304.

The previous prime is 2620497978557. The next prime is 2620497978601. The reversal of 2620497978576 is 6758797940262.

2620497978576 is a `hidden beast` number, since 2 + 6 + 2 + 0 + 49 + 7 + 9 + 7 + 8 + 576 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15002640 + ... + 15176303.

Almost surely, 2^{2620497978576} is an apocalyptic number.

It is an amenable number.

2620497978576 is an abundant number, since it is smaller than the sum of its proper divisors (5077184909616).

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

2620497978576 is a wasteful number, since it uses less digits than its factorization.

2620497978576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30179030 (or 30179015 counting only the distinct ones).

The product of its (nonzero) digits is 640120320, while the sum is 72.

The spelling of 2620497978576 in words is "two trillion, six hundred twenty billion, four hundred ninety-seven million, nine hundred seventy-eight thousand, five hundred seventy-six".