745478818875 has 64 divisors (see below), whose sum is σ = 1575208627200. Its totient is φ = 340790306400.

The previous prime is 745478818867. The next prime is 745478818879. The reversal of 745478818875 is 578818874547.

745478818875 is a `hidden beast` number, since 7 + 4 + 5 + 478 + 8 + 1 + 88 + 75 = 666.

It is not a de Polignac number, because 745478818875 - 2³ = 745478818867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (745478818879) 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, 15753705 + ... + 15800954.

It is an arithmetic number, because the mean of its divisors is an integer number (24612634800).

Almost surely, 2^745478818875 is an apocalyptic number.

745478818875 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

745478818875 is an abundant number, since it is smaller than the sum of its proper divisors (829729808325).

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

745478818875 is a wasteful number, since it uses less digits than its factorization.

745478818875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31554690 (or 31554674 counting only the distinct ones).

The product of its digits is 561971200, while the sum is 72.

The spelling of 745478818875 in words is "seven hundred forty-five billion, four hundred seventy-eight million, eight hundred eighteen thousand, eight hundred seventy-five".