75620445407 has 4 divisors (see below), whose sum is σ = 81437402760. Its totient is φ = 69803488056.

The previous prime is 75620445403. The next prime is 75620445539. The reversal of 75620445407 is 70454402657.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 75620445407 - 2² = 75620445403 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 (75620445401) 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, 2908478657 + ... + 2908478682.

It is an arithmetic number, because the mean of its divisors is an integer number (20359350690).

Almost surely, 2^75620445407 is an apocalyptic number.

75620445407 is a deficient number, since it is larger than the sum of its proper divisors (5816957353).

75620445407 is a wasteful number, since it uses less digits than its factorization.

75620445407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5816957352.

The product of its (nonzero) digits is 940800, while the sum is 44.

The spelling of 75620445407 in words is "seventy-five billion, six hundred twenty million, four hundred forty-five thousand, four hundred seven".