106820040915 has 72 divisors (see below), whose sum is σ = 224748714528. Its totient is φ = 46708865280.

The previous prime is 106820040907. The next prime is 106820040937. The reversal of 106820040915 is 519040028601.

It is not a de Polignac number, because 106820040915 - 2³ = 106820040907 is a prime.

It is a super-2 number, since 2×106820040915² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 106820040915.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1002426 + ... + 1103855.

It is an arithmetic number, because the mean of its divisors is an integer number (3121509924).

Almost surely, 2^106820040915 is an apocalyptic number.

106820040915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

106820040915 is an abundant number, since it is smaller than the sum of its proper divisors (117928673613).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

106820040915 is a wasteful number, since it uses less digits than its factorization.

106820040915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106329 (or 2106319 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 106820040915 in words is "one hundred six billion, eight hundred twenty million, forty thousand, nine hundred fifteen".