2620521593216 has 64 divisors (see below), whose sum is σ = 5363788626000. Its totient is φ = 1274773733376.

The previous prime is 2620521593197. The next prime is 2620521593227. The reversal of 2620521593216 is 6123951250262.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×2620521593216² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1056101 + ... + 2521188.

Almost surely, 2^{2620521593216} is an apocalyptic number.

It is an amenable number.

2620521593216 is an abundant number, since it is smaller than the sum of its proper divisors (2743267032784).

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

2620521593216 is an equidigital number, since it uses as much as digits as its factorization.

2620521593216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3577459 (or 3577447 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 2620521593216 in words is "two trillion, six hundred twenty billion, five hundred twenty-one million, five hundred ninety-three thousand, two hundred sixteen".