755529721872 has 160 divisors (see below), whose sum is σ = 2185294132224. Its totient is φ = 223787827200.

The previous prime is 755529721847. The next prime is 755529721897. The reversal of 755529721872 is 278127925557.

It is an interprime number because it is at equal distance from previous prime (755529721847) and next prime (755529721897).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 672898 + ... + 1401374.

Almost surely, 2^755529721872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 755529721872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1092647066112).

755529721872 is an abundant number, since it is smaller than the sum of its proper divisors (1429764410352).

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

755529721872 is a wasteful number, since it uses less digits than its factorization.

755529721872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728577 (or 728571 counting only the distinct ones).

The product of its digits is 24696000, while the sum is 60.

The spelling of 755529721872 in words is "seven hundred fifty-five billion, five hundred twenty-nine million, seven hundred twenty-one thousand, eight hundred seventy-two".