2556730522545 has 16 divisors (see below), whose sum is σ = 4094930374272. Its totient is φ = 1362202432640.

The previous prime is 2556730522529. The next prime is 2556730522571. The reversal of 2556730522545 is 5452250376552.

It is not a de Polignac number, because 2556730522545 - 2⁴ = 2556730522529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86683476 + ... + 86712965.

It is an arithmetic number, because the mean of its divisors is an integer number (255933148392).

Almost surely, 2^{2556730522545} is an apocalyptic number.

It is an amenable number.

2556730522545 is a deficient number, since it is larger than the sum of its proper divisors (1538199851727).

2556730522545 is a wasteful number, since it uses less digits than its factorization.

2556730522545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173397432.

The product of its (nonzero) digits is 12600000, while the sum is 51.

The spelling of 2556730522545 in words is "two trillion, five hundred fifty-six billion, seven hundred thirty million, five hundred twenty-two thousand, five hundred forty-five".