16172140355 has 32 divisors (see below), whose sum is σ = 22681310208. Its totient is φ = 10840521600.

The previous prime is 16172140349. The next prime is 16172140367. The reversal of 16172140355 is 55304127161.

It is a happy number.

It is not a de Polignac number, because 16172140355 - 2¹⁰ = 16172139331 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 324770 + ... + 371240.

It is an arithmetic number, because the mean of its divisors is an integer number (708790944).

Almost surely, 2^16172140355 is an apocalyptic number.

16172140355 is a deficient number, since it is larger than the sum of its proper divisors (6509169853).

16172140355 is a wasteful number, since it uses less digits than its factorization.

16172140355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46707.

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 16172140355 in words is "sixteen billion, one hundred seventy-two million, one hundred forty thousand, three hundred fifty-five".