75521141623 has 4 divisors (see below), whose sum is σ = 75731507280. Its totient is φ = 75310775968.

The previous prime is 75521141603. The next prime is 75521141711. The reversal of 75521141623 is 32614112557.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75521141623 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 (75521141603) 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, 105182290 + ... + 105183007.

It is an arithmetic number, because the mean of its divisors is an integer number (18932876820).

Almost surely, 2^75521141623 is an apocalyptic number.

75521141623 is a deficient number, since it is larger than the sum of its proper divisors (210365657).

75521141623 is a wasteful number, since it uses less digits than its factorization.

75521141623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210365656.

The product of its digits is 50400, while the sum is 37.

The spelling of 75521141623 in words is "seventy-five billion, five hundred twenty-one million, one hundred forty-one thousand, six hundred twenty-three".