11651655154161 has 32 divisors (see below), whose sum is σ = 17241773322240. Its totient is φ = 6939238644800.

The previous prime is 11651655154159. The next prime is 11651655154163. The reversal of 11651655154161 is 16145155615611.

It is a happy number.

11651655154161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11651655154159) and next prime (11651655154163).

It is not a de Polignac number, because 11651655154161 - 2¹ = 11651655154159 is a prime.

It is a super-2 number, since 2×11651655154161² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11651655154161.

It is not an unprimeable number, because it can be changed into a prime (11651655154163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3889831 + ... + 6199523.

It is an arithmetic number, because the mean of its divisors is an integer number (538805416320).

Almost surely, 2^{11651655154161} is an apocalyptic number.

11651655154161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11651655154161 is a deficient number, since it is larger than the sum of its proper divisors (5590118168079).

11651655154161 is a wasteful number, since it uses less digits than its factorization.

11651655154161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2312357.

The product of its digits is 540000, while the sum is 48.

The spelling of 11651655154161 in words is "eleven trillion, six hundred fifty-one billion, six hundred fifty-five million, one hundred fifty-four thousand, one hundred sixty-one".