20100919102 has 16 divisors (see below), whose sum is σ = 34827261552. Its totient is φ = 8599323520.

The previous prime is 20100919081. The next prime is 20100919117. The reversal of 20100919102 is 20191900102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26872513 + ... + 26873260.

It is an arithmetic number, because the mean of its divisors is an integer number (2176703847).

Almost surely, 2^20100919102 is an apocalyptic number.

20100919102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20100919102 is a deficient number, since it is larger than the sum of its proper divisors (14726342450).

20100919102 is a wasteful number, since it uses less digits than its factorization.

20100919102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53745803.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 20100919102 in words is "twenty billion, one hundred million, nine hundred nineteen thousand, one hundred two".