11601161555615 has 8 divisors (see below), whose sum is σ = 14526671861088. Its totient is φ = 8877410581600.

The previous prime is 11601161555611. The next prime is 11601161555639. The reversal of 11601161555615 is 51655516110611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11601161555615 - 2² = 11601161555611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11601161555611) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 50439832736 + ... + 50439832965.

It is an arithmetic number, because the mean of its divisors is an integer number (1815833982636).

Almost surely, 2^{11601161555615} is an apocalyptic number.

11601161555615 is a deficient number, since it is larger than the sum of its proper divisors (2925510305473).

11601161555615 is a wasteful number, since it uses less digits than its factorization.

11601161555615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100879665729.

The product of its (nonzero) digits is 135000, while the sum is 44.

The spelling of 11601161555615 in words is "eleven trillion, six hundred one billion, one hundred sixty-one million, five hundred fifty-five thousand, six hundred fifteen".