720734177875 has 16 divisors (see below), whose sum is σ = 899507576448. Its totient is φ = 576567264000.

The previous prime is 720734177873. The next prime is 720734177881. The reversal of 720734177875 is 578771437027.

It is not a de Polignac number, because 720734177875 - 2¹ = 720734177873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720734177873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4257094 + ... + 4423156.

It is an arithmetic number, because the mean of its divisors is an integer number (56219223528).

Almost surely, 2^720734177875 is an apocalyptic number.

720734177875 is a deficient number, since it is larger than the sum of its proper divisors (178773398573).

720734177875 is a wasteful number, since it uses less digits than its factorization.

720734177875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200799 (or 200789 counting only the distinct ones).

The product of its (nonzero) digits is 16134720, while the sum is 58.

The spelling of 720734177875 in words is "seven hundred twenty billion, seven hundred thirty-four million, one hundred seventy-seven thousand, eight hundred seventy-five".