16115666151 has 32 divisors (see below), whose sum is σ = 24385761792. Its totient is φ = 9392169600.

The previous prime is 16115666131. The next prime is 16115666167. The reversal of 16115666151 is 15166651161.

It is not a de Polignac number, because 16115666151 - 2²² = 16111471847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16115666101) 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, 1656 + ... + 179538.

It is an arithmetic number, because the mean of its divisors is an integer number (762055056).

Almost surely, 2^16115666151 is an apocalyptic number.

16115666151 is a deficient number, since it is larger than the sum of its proper divisors (8270095641).

16115666151 is a wasteful number, since it uses less digits than its factorization.

16115666151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178023.

The product of its digits is 32400, while the sum is 39.

The spelling of 16115666151 in words is "sixteen billion, one hundred fifteen million, six hundred sixty-six thousand, one hundred fifty-one".