918773978618496 has 512 divisors, whose sum is σ = 3382447896576000. Its totient is φ = 213179483750400.

The previous prime is 918773978618491. The next prime is 918773978618497. The reversal of 918773978618496 is 694816879377819.

It is a Harshad number since it is a multiple of its sum of digits (93).

It is not an unprimeable number, because it can be changed into a prime (918773978618491) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26636521 + ... + 50468328.

It is an arithmetic number, because the mean of its divisors is an integer number (6606343548000).

Almost surely, 2^{918773978618496} is an apocalyptic number.

918773978618496 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

918773978618496 is an abundant number, since it is smaller than the sum of its proper divisors (2463673917957504).

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

918773978618496 is a wasteful number, since it uses less digits than its factorization.

918773978618496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77104928 (or 77104916 counting only the distinct ones).

The product of its digits is 55306395648, while the sum is 93.

The spelling of 918773978618496 in words is "nine hundred eighteen trillion, seven hundred seventy-three billion, nine hundred seventy-eight million, six hundred eighteen thousand, four hundred ninety-six".