16720101705 has 16 divisors (see below), whose sum is σ = 26753765760. Its totient is φ = 8916853248.

The previous prime is 16720101659. The next prime is 16720101737. The reversal of 16720101705 is 50710102761.

It is not a de Polignac number, because 16720101705 - 2¹¹ = 16720099657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472044 + ... + 506226.

It is an arithmetic number, because the mean of its divisors is an integer number (1672110360).

Almost surely, 2^16720101705 is an apocalyptic number.

16720101705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16720101705 is a deficient number, since it is larger than the sum of its proper divisors (10033664055).

16720101705 is a wasteful number, since it uses less digits than its factorization.

16720101705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66800.

The product of its (nonzero) digits is 2940, while the sum is 30.

The spelling of 16720101705 in words is "sixteen billion, seven hundred twenty million, one hundred one thousand, seven hundred five".