720997975275 has 12 divisors (see below), whose sum is σ = 1192049985912. Its totient is φ = 384532253440.

The previous prime is 720997975267. The next prime is 720997975307. The reversal of 720997975275 is 572579799027.

It is not a de Polignac number, because 720997975275 - 2³ = 720997975267 is a prime.

It is a super-2 number, since 2×720997975275² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4806653094 + ... + 4806653243.

It is an arithmetic number, because the mean of its divisors is an integer number (99337498826).

Almost surely, 2^720997975275 is an apocalyptic number.

720997975275 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

720997975275 is a deficient number, since it is larger than the sum of its proper divisors (471052010637).

720997975275 is a wasteful number, since it uses less digits than its factorization.

720997975275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9613306350 (or 9613306345 counting only the distinct ones).

The product of its (nonzero) digits is 175032900, while the sum is 69.

The spelling of 720997975275 in words is "seven hundred twenty billion, nine hundred ninety-seven million, nine hundred seventy-five thousand, two hundred seventy-five".