16118612257 has 8 divisors (see below), whose sum is σ = 17602718112. Its totient is φ = 14637636000.

The previous prime is 16118612249. The next prime is 16118612269. The reversal of 16118612257 is 75221681161.

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

It is a cyclic number.

It is not a de Polignac number, because 16118612257 - 2³ = 16118612249 is a prime.

It is a super-2 number, since 2×16118612257² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16118612207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 771619 + ... + 792232.

It is an arithmetic number, because the mean of its divisors is an integer number (2200339764).

Almost surely, 2^16118612257 is an apocalyptic number.

It is an amenable number.

16118612257 is a deficient number, since it is larger than the sum of its proper divisors (1484105855).

16118612257 is a wasteful number, since it uses less digits than its factorization.

16118612257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564799.

The product of its digits is 40320, while the sum is 40.

The spelling of 16118612257 in words is "sixteen billion, one hundred eighteen million, six hundred twelve thousand, two hundred fifty-seven".