750427111309 has 4 divisors (see below), whose sum is σ = 750446762940. Its totient is φ = 750407459680.

The previous prime is 750427111099. The next prime is 750427111333. The reversal of 750427111309 is 903111724057.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 684627166084 + 65799945225 = 827422^2 + 256515^2 .

It is a cyclic number.

It is not a de Polignac number, because 750427111309 - 2³¹ = 748279627661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (750427111009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9768424 + ... + 9844945.

It is an arithmetic number, because the mean of its divisors is an integer number (187611690735).

Almost surely, 2^750427111309 is an apocalyptic number.

It is an amenable number.

750427111309 is a deficient number, since it is larger than the sum of its proper divisors (19651631).

750427111309 is a wasteful number, since it uses less digits than its factorization.

750427111309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19651630.

The product of its (nonzero) digits is 52920, while the sum is 40.

The spelling of 750427111309 in words is "seven hundred fifty billion, four hundred twenty-seven million, one hundred eleven thousand, three hundred nine".