2621065360253 has 16 divisors (see below), whose sum is σ = 2827725390000. Its totient is φ = 2420240249856.

The previous prime is 2621065360231. The next prime is 2621065360301. The reversal of 2621065360253 is 3520635601262.

It can be written as a sum of positive squares in 8 ways, for example, as 64018108324 + 2557047251929 = 253018^2 + 1599077^2 .

It is a cyclic number.

It is not a de Polignac number, because 2621065360253 - 2¹⁶ = 2621065294717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2621065360253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2621065365253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30364751 + ... + 30450947.

It is an arithmetic number, because the mean of its divisors is an integer number (176732836875).

Almost surely, 2^{2621065360253} is an apocalyptic number.

It is an amenable number.

2621065360253 is a deficient number, since it is larger than the sum of its proper divisors (206660029747).

2621065360253 is a wasteful number, since it uses less digits than its factorization.

2621065360253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120016.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 2621065360253 in words is "two trillion, six hundred twenty-one billion, sixty-five million, three hundred sixty thousand, two hundred fifty-three".