106921281915 has 24 divisors (see below), whose sum is σ = 211805968608. Its totient is φ = 48878300160.

The previous prime is 106921281833. The next prime is 106921281923. The reversal of 106921281915 is 519182129601.

It is not a de Polignac number, because 106921281915 - 2⁸ = 106921281659 is a prime.

It is a super-2 number, since 2×106921281915² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169716006 + ... + 169716635.

It is an arithmetic number, because the mean of its divisors is an integer number (8825248692).

Almost surely, 2^106921281915 is an apocalyptic number.

106921281915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

106921281915 is a deficient number, since it is larger than the sum of its proper divisors (104884686693).

106921281915 is a wasteful number, since it uses less digits than its factorization.

106921281915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339432659 (or 339432656 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 45.

The spelling of 106921281915 in words is "one hundred six billion, nine hundred twenty-one million, two hundred eighty-one thousand, nine hundred fifteen".