2620623519556 has 27 divisors (see below), whose sum is σ = 5334886873407. Its totient is φ = 1123114652520.

The previous prime is 2620623519541. The next prime is 2620623519571. The reversal of 2620623519556 is 6559153260262.

The square root of 2620623519556 is 1618834.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (2620623519541) and next prime (2620623519571).

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 22605861 + ... + 22721491.

Almost surely, 2^{2620623519556} is an apocalyptic number.

2620623519556 is the 1618834-th square number.

It is an amenable number.

2620623519556 is an abundant number, since it is smaller than the sum of its proper divisors (2714263353851).

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

2620623519556 is an frugal number, since it uses more digits than its factorization.

2620623519556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231280 (or 115640 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 52.

The spelling of 2620623519556 in words is "two trillion, six hundred twenty billion, six hundred twenty-three million, five hundred nineteen thousand, five hundred fifty-six".