11561295498128 has 20 divisors (see below), whose sum is σ = 22400093301900. Its totient is φ = 5780626258944.

The previous prime is 11561295498101. The next prime is 11561295498167. The reversal of 11561295498128 is 82189459216511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9723720050944 + 1837575447184 = 3118288^2 + 1355572^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3659948 + ... + 6042996.

It is an arithmetic number, because the mean of its divisors is an integer number (1120004665095).

Almost surely, 2^{11561295498128} is an apocalyptic number.

It is an amenable number.

11561295498128 is a deficient number, since it is larger than the sum of its proper divisors (10838797803772).

11561295498128 is a wasteful number, since it uses less digits than its factorization.

11561295498128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686274 (or 2686268 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 62.

The spelling of 11561295498128 in words is "eleven trillion, five hundred sixty-one billion, two hundred ninety-five million, four hundred ninety-eight thousand, one hundred twenty-eight".