16180397179509 has 8 divisors (see below), whose sum is σ = 21846949778560. Its totient is φ = 10650388016736.

The previous prime is 16180397179451. The next prime is 16180397179537. The reversal of 16180397179509 is 90597179308161.

It is a happy number.

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

It is not a de Polignac number, because 16180397179509 - 2¹⁶ = 16180397113973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16180397179509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16180397172509) 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, 34135858792 + ... + 34135859265.

It is an arithmetic number, because the mean of its divisors is an integer number (2730868722320).

Almost surely, 2^{16180397179509} is an apocalyptic number.

It is an amenable number.

16180397179509 is a deficient number, since it is larger than the sum of its proper divisors (5666552599051).

16180397179509 is an equidigital number, since it uses as much as digits as its factorization.

16180397179509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68271718139.

The product of its (nonzero) digits is 25719120, while the sum is 66.

The spelling of 16180397179509 in words is "sixteen trillion, one hundred eighty billion, three hundred ninety-seven million, one hundred seventy-nine thousand, five hundred nine".