11561236141 has 16 divisors (see below), whose sum is σ = 14337848448. Its totient is φ = 9077515200.

The previous prime is 11561236139. The next prime is 11561236157. The reversal of 11561236141 is 14163216511.

It is not a de Polignac number, because 11561236141 - 2¹ = 11561236139 is a prime.

It is a super-2 number, since 2×11561236141² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11561236111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472990 + ... + 496831.

It is an arithmetic number, because the mean of its divisors is an integer number (896115528).

Almost surely, 2^11561236141 is an apocalyptic number.

It is an amenable number.

11561236141 is a deficient number, since it is larger than the sum of its proper divisors (2776612307).

11561236141 is a wasteful number, since it uses less digits than its factorization.

11561236141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969972.

The product of its digits is 4320, while the sum is 31.

The spelling of 11561236141 in words is "eleven billion, five hundred sixty-one million, two hundred thirty-six thousand, one hundred forty-one".