11505155011051 has 8 divisors (see below), whose sum is σ = 12441578419424. Its totient is φ = 10576076100480.

The previous prime is 11505155011039. The next prime is 11505155011061. The reversal of 11505155011051 is 15011055150511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11505155011051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11505155011061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1836121191 + ... + 1836127456.

It is an arithmetic number, because the mean of its divisors is an integer number (1555197302428).

Almost surely, 2^{11505155011051} is an apocalyptic number.

11505155011051 is a deficient number, since it is larger than the sum of its proper divisors (936423408373).

11505155011051 is a wasteful number, since it uses less digits than its factorization.

11505155011051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672248901.

The product of its (nonzero) digits is 3125, while the sum is 31.

The spelling of 11505155011051 in words is "eleven trillion, five hundred five billion, one hundred fifty-five million, eleven thousand, fifty-one".