7166115015557 has 16 divisors (see below), whose sum is σ = 7325198865600. Its totient is φ = 7008464390400.

The previous prime is 7166115015503. The next prime is 7166115015559. The reversal of 7166115015557 is 7555105116617.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7166115015557 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 (7166115015559) 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, 9073694 + ... + 9831792.

It is an arithmetic number, because the mean of its divisors is an integer number (457824929100).

Almost surely, 2^{7166115015557} is an apocalyptic number.

It is an amenable number.

7166115015557 is a deficient number, since it is larger than the sum of its proper divisors (159083850043).

7166115015557 is a wasteful number, since it uses less digits than its factorization.

7166115015557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759044.

The product of its (nonzero) digits is 1102500, while the sum is 50.

The spelling of 7166115015557 in words is "seven trillion, one hundred sixty-six billion, one hundred fifteen million, fifteen thousand, five hundred fifty-seven".