16172070705 has 48 divisors (see below), whose sum is σ = 32047526784. Its totient is φ = 7390310400.

The previous prime is 16172070703. The next prime is 16172070721. The reversal of 16172070705 is 50707027161.

It is not a de Polignac number, because 16172070705 - 2¹ = 16172070703 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16172070705.

It is not an unprimeable number, because it can be changed into a prime (16172070703) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1081530 + ... + 1096380.

It is an arithmetic number, because the mean of its divisors is an integer number (667656808).

Almost surely, 2^16172070705 is an apocalyptic number.

16172070705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16172070705 is a deficient number, since it is larger than the sum of its proper divisors (15875456079).

16172070705 is a wasteful number, since it uses less digits than its factorization.

16172070705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18326 (or 18323 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 36.

Adding to 16172070705 its reverse (50707027161), we get a palindrome (66879097866).

The spelling of 16172070705 in words is "sixteen billion, one hundred seventy-two million, seventy thousand, seven hundred five".