2506156075613 has 4 divisors (see below), whose sum is σ = 2511813313248. Its totient is φ = 2500498837980.

The previous prime is 2506156075603. The next prime is 2506156075673. The reversal of 2506156075613 is 3165706516052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2506156075613 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2506156075603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2828618153 + ... + 2828619038.

It is an arithmetic number, because the mean of its divisors is an integer number (627953328312).

Almost surely, 2^{2506156075613} is an apocalyptic number.

It is an amenable number.

2506156075613 is a deficient number, since it is larger than the sum of its proper divisors (5657237635).

2506156075613 is an equidigital number, since it uses as much as digits as its factorization.

2506156075613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5657237634.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 2506156075613 in words is "two trillion, five hundred six billion, one hundred fifty-six million, seventy-five thousand, six hundred thirteen".