720075557040 has 160 divisors (see below), whose sum is σ = 2551586973696. Its totient is φ = 164558883840.

The previous prime is 720075557029. The next prime is 720075557111. The reversal of 720075557040 is 40755570027.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 720075556983 and 720075557001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10012249 + ... + 10083911.

Almost surely, 2^720075557040 is an apocalyptic number.

720075557040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

720075557040 is an abundant number, since it is smaller than the sum of its proper divisors (1831511416656).

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

720075557040 is a wasteful number, since it uses less digits than its factorization.

720075557040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77667 (or 77661 counting only the distinct ones).

The product of its (nonzero) digits is 343000, while the sum is 42.

The spelling of 720075557040 in words is "seven hundred twenty billion, seventy-five million, five hundred fifty-seven thousand, forty".