100920985707 has 18 divisors (see below), whose sum is σ = 142955545908. Its totient is φ = 63317102208.

The previous prime is 100920985691. The next prime is 100920985717. The reversal of 100920985707 is 707589029001.

It is not a de Polignac number, because 100920985707 - 2⁴ = 100920985691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100920985717) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9348669 + ... + 9359457.

Almost surely, 2^100920985707 is an apocalyptic number.

100920985707 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

100920985707 is a deficient number, since it is larger than the sum of its proper divisors (42034560201).

100920985707 is an frugal number, since it uses more digits than its factorization.

100920985707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21615 (or 10809 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 48.

Multiplying 100920985707 by its sum of digits (48), we get a square (4844207313936 = 2200956²).

The spelling of 100920985707 in words is "one hundred billion, nine hundred twenty million, nine hundred eighty-five thousand, seven hundred seven".