100001009620 has 24 divisors (see below), whose sum is σ = 216776383488. Its totient is φ = 38710068000.

The previous prime is 100001009617. The next prime is 100001009621. The reversal of 100001009620 is 26900100001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001009621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80645356 + ... + 80646595.

It is an arithmetic number, because the mean of its divisors is an integer number (9032349312).

Almost surely, 2^100001009620 is an apocalyptic number.

100001009620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100001009620 is an abundant number, since it is smaller than the sum of its proper divisors (116775373868).

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

100001009620 is a wasteful number, since it uses less digits than its factorization.

100001009620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161291991 (or 161291989 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 100001009620 its reverse (26900100001), we get a palindrome (126901109621).

The spelling of 100001009620 in words is "one hundred billion, one million, nine thousand, six hundred twenty".