6115010161561 has 16 divisors (see below), whose sum is σ = 6995404541440. Its totient is φ = 5236322008320.

The previous prime is 6115010161553. The next prime is 6115010161571. The reversal of 6115010161561 is 1651610105116.

It is a cyclic number.

It is not a de Polignac number, because 6115010161561 - 2³ = 6115010161553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6115010161531) 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, 109088701 + ... + 109144741.

It is an arithmetic number, because the mean of its divisors is an integer number (437212783840).

Almost surely, 2^{6115010161561} is an apocalyptic number.

It is an amenable number.

6115010161561 is a deficient number, since it is larger than the sum of its proper divisors (880394379879).

6115010161561 is a wasteful number, since it uses less digits than its factorization.

6115010161561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70984.

The product of its (nonzero) digits is 5400, while the sum is 34.

Adding to 6115010161561 its reverse (1651610105116), we get a palindrome (7766620266677).

The spelling of 6115010161561 in words is "six trillion, one hundred fifteen billion, ten million, one hundred sixty-one thousand, five hundred sixty-one".