101717620690 has 80 divisors (see below), whose sum is σ = 214256332800. Its totient is φ = 34766534880.

The previous prime is 101717620619. The next prime is 101717620691. The reversal of 101717620690 is 96026717101.

It is a super-2 number, since 2×101717620690² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101717620691) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7940911 + ... + 7953709.

It is an arithmetic number, because the mean of its divisors is an integer number (2678204160).

Almost surely, 2^101717620690 is an apocalyptic number.

101717620690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101717620690 is an abundant number, since it is smaller than the sum of its proper divisors (112538712110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101717620690 is an equidigital number, since it uses as much as digits as its factorization.

101717620690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13165 (or 13144 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 40.

The spelling of 101717620690 in words is "one hundred one billion, seven hundred seventeen million, six hundred twenty thousand, six hundred ninety".