102122881615 has 4 divisors (see below), whose sum is σ = 122547457944. Its totient is φ = 81698305288.

The previous prime is 102122881613. The next prime is 102122881657. The reversal of 102122881615 is 516188221201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102122881615 - 2¹ = 102122881613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102122881613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10212288157 + ... + 10212288166.

It is an arithmetic number, because the mean of its divisors is an integer number (30636864486).

Almost surely, 2^102122881615 is an apocalyptic number.

102122881615 is a deficient number, since it is larger than the sum of its proper divisors (20424576329).

102122881615 is an equidigital number, since it uses as much as digits as its factorization.

102122881615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20424576328.

The product of its (nonzero) digits is 15360, while the sum is 37.

The spelling of 102122881615 in words is "one hundred two billion, one hundred twenty-two million, eight hundred eighty-one thousand, six hundred fifteen".