20106086915 has 36 divisors (see below), whose sum is σ = 25910131968. Its totient is φ = 14974122240.

The previous prime is 20106086911. The next prime is 20106086927. The reversal of 20106086915 is 51968060102.

It is not a de Polignac number, because 20106086915 - 2² = 20106086911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20106086911) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 60743300 + ... + 60743630.

It is an arithmetic number, because the mean of its divisors is an integer number (719725888).

Almost surely, 2^20106086915 is an apocalyptic number.

20106086915 is a deficient number, since it is larger than the sum of its proper divisors (5804045053).

20106086915 is an equidigital number, since it uses as much as digits as its factorization.

20106086915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 20106086915 in words is "twenty billion, one hundred six million, eighty-six thousand, nine hundred fifteen".