720518213478 has 32 divisors (see below), whose sum is σ = 1646924348160. Its totient is φ = 205859149920.

The previous prime is 720518213461. The next prime is 720518213479. The reversal of 720518213478 is 874312815027.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720518213479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4498068 + ... + 4655496.

It is an arithmetic number, because the mean of its divisors is an integer number (51466385880).

Almost surely, 2^720518213478 is an apocalyptic number.

720518213478 is an abundant number, since it is smaller than the sum of its proper divisors (926406134682).

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

720518213478 is a wasteful number, since it uses less digits than its factorization.

720518213478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266412.

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 720518213478 in words is "seven hundred twenty billion, five hundred eighteen million, two hundred thirteen thousand, four hundred seventy-eight".