78275908418 has 32 divisors (see below), whose sum is σ = 125850170880. Its totient is φ = 36423383040.

The previous prime is 78275908391. The next prime is 78275908433. The reversal of 78275908418 is 81480957287.

It is a super-2 number, since 2×78275908418² (a number of 23 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 635618 + ... + 748706.

It is an arithmetic number, because the mean of its divisors is an integer number (3932817840).

Almost surely, 2^78275908418 is an apocalyptic number.

78275908418 is a deficient number, since it is larger than the sum of its proper divisors (47574262462).

78275908418 is a wasteful number, since it uses less digits than its factorization.

78275908418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113522.

The product of its (nonzero) digits is 9031680, while the sum is 59.

The spelling of 78275908418 in words is "seventy-eight billion, two hundred seventy-five million, nine hundred eight thousand, four hundred eighteen".