20100100995 has 56 divisors (see below), whose sum is σ = 38945548656. Its totient is φ = 9895411008.

The previous prime is 20100100967. The next prime is 20100101003. The reversal of 20100100995 is 59900100102.

It is a happy number.

It is not a de Polignac number, because 20100100995 - 2⁵ = 20100100963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 164709 + ... + 259478.

It is an arithmetic number, because the mean of its divisors is an integer number (695456226).

Almost surely, 2^20100100995 is an apocalyptic number.

20100100995 is a deficient number, since it is larger than the sum of its proper divisors (18845447661).

20100100995 is an equidigital number, since it uses as much as digits as its factorization.

20100100995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424223 (or 424208 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The spelling of 20100100995 in words is "twenty billion, one hundred million, one hundred thousand, nine hundred ninety-five".