16116621479 has 16 divisors (see below), whose sum is σ = 19291322880. Its totient is φ = 13164470880.

The previous prime is 16116621467. The next prime is 16116621487. The reversal of 16116621479 is 97412661161.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16116621479 - 2⁸ = 16116621223 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 (16116621439) 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, 142757 + ... + 229374.

It is an arithmetic number, because the mean of its divisors is an integer number (1205707680).

Almost surely, 2^16116621479 is an apocalyptic number.

16116621479 is a deficient number, since it is larger than the sum of its proper divisors (3174701401).

16116621479 is a wasteful number, since it uses less digits than its factorization.

16116621479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372430.

The product of its digits is 108864, while the sum is 44.

The spelling of 16116621479 in words is "sixteen billion, one hundred sixteen million, six hundred twenty-one thousand, four hundred seventy-nine".