20166513115 has 48 divisors (see below), whose sum is σ = 28750075200. Its totient is φ = 13300733952.

The previous prime is 20166513089. The next prime is 20166513119. The reversal of 20166513115 is 51131566102.

It is a happy number.

It is not a de Polignac number, because 20166513115 - 2⁵ = 20166513083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20166513119) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4262071 + ... + 4266799.

It is an arithmetic number, because the mean of its divisors is an integer number (598959900).

Almost surely, 2^20166513115 is an apocalyptic number.

20166513115 is a deficient number, since it is larger than the sum of its proper divisors (8583562085).

20166513115 is an equidigital number, since it uses as much as digits as its factorization.

20166513115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4904 (or 4867 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 20166513115 in words is "twenty billion, one hundred sixty-six million, five hundred thirteen thousand, one hundred fifteen".