12506402051155 has 32 divisors (see below), whose sum is σ = 15238637826048. Its totient is φ = 9851967014400.

The previous prime is 12506402051141. The next prime is 12506402051167. The reversal of 12506402051155 is 55115020460521.

It is a de Polignac number, because none of the positive numbers 2^k-12506402051155 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 474235120 + ... + 474261490.

It is an arithmetic number, because the mean of its divisors is an integer number (476207432064).

Almost surely, 2^{12506402051155} is an apocalyptic number.

12506402051155 is a deficient number, since it is larger than the sum of its proper divisors (2732235774893).

12506402051155 is a wasteful number, since it uses less digits than its factorization.

12506402051155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30187.

The product of its (nonzero) digits is 60000, while the sum is 37.

The spelling of 12506402051155 in words is "twelve trillion, five hundred six billion, four hundred two million, fifty-one thousand, one hundred fifty-five".