418378878815 has 48 divisors (see below), whose sum is σ = 527445626880. Its totient is φ = 318255739200.

The previous prime is 418378878793. The next prime is 418378878817. The reversal of 418378878815 is 518878873814.

It is not a de Polignac number, because 418378878815 - 2³² = 414083911519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (418378878817) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 286756556 + ... + 286758014.

It is an arithmetic number, because the mean of its divisors is an integer number (10988450560).

Almost surely, 2^418378878815 is an apocalyptic number.

418378878815 is a deficient number, since it is larger than the sum of its proper divisors (109066748065).

418378878815 is a wasteful number, since it uses less digits than its factorization.

418378878815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004 (or 1933 counting only the distinct ones).

The product of its digits is 96337920, while the sum is 68.

The spelling of 418378878815 in words is "four hundred eighteen billion, three hundred seventy-eight million, eight hundred seventy-eight thousand, eight hundred fifteen".