10010001720 has 64 divisors (see below), whose sum is σ = 30668958720. Its totient is φ = 2612537984.

The previous prime is 10010001713. The next prime is 10010001751. The reversal of 10010001720 is 2710001001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10010001696 and 10010001705.

It is a congruent number.

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, 881772 + ... + 893051.

It is an arithmetic number, because the mean of its divisors is an integer number (479202480).

Almost surely, 2^10010001720 is an apocalyptic number.

10010001720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10010001720 is an abundant number, since it is smaller than the sum of its proper divisors (20658957000).

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

10010001720 is a wasteful number, since it uses less digits than its factorization.

10010001720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774884 (or 1774880 counting only the distinct ones).

The product of its (nonzero) digits is 14, while the sum is 12.

Adding to 10010001720 its reverse (2710001001), we get a palindrome (12720002721).

The spelling of 10010001720 in words is "ten billion, ten million, one thousand, seven hundred twenty".