11611561101010 has 64 divisors (see below), whose sum is σ = 23698436832000. Its totient is φ = 4060802564352.

The previous prime is 11611561101001. The next prime is 11611561101059. The reversal of 11611561101010 is 1010116511611.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10765816 + ... + 11795164.

It is an arithmetic number, because the mean of its divisors is an integer number (370288075500).

Almost surely, 2^{11611561101010} is an apocalyptic number.

11611561101010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11611561101010 is an abundant number, since it is smaller than the sum of its proper divisors (12086875730990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11611561101010 is a wasteful number, since it uses less digits than its factorization.

11611561101010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033955.

The product of its (nonzero) digits is 180, while the sum is 25.

Adding to 11611561101010 its reverse (1010116511611), we get a palindrome (12621677612621).

The spelling of 11611561101010 in words is "eleven trillion, six hundred eleven billion, five hundred sixty-one million, one hundred one thousand, ten".