101115565515 has 80 divisors (see below), whose sum is σ = 184350972960. Its totient is φ = 53011791360.

The previous prime is 101115565487. The next prime is 101115565519. The reversal of 101115565515 is 515565511101.

It is not a de Polignac number, because 101115565515 - 2⁹ = 101115565003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101115565515.

It is not an unprimeable number, because it can be changed into a prime (101115565519) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 13808055 + ... + 13815375.

It is an arithmetic number, because the mean of its divisors is an integer number (2304387162).

Almost surely, 2^101115565515 is an apocalyptic number.

101115565515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

101115565515 is a deficient number, since it is larger than the sum of its proper divisors (83235407445).

101115565515 is an equidigital number, since it uses as much as digits as its factorization.

101115565515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7914 (or 7905 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 36.

The spelling of 101115565515 in words is "one hundred one billion, one hundred fifteen million, five hundred sixty-five thousand, five hundred fifteen".