75083264621 has 2 divisors, whose sum is σ = 75083264622. Its totient is φ = 75083264620.

The previous prime is 75083264603. The next prime is 75083264623. The reversal of 75083264621 is 12646238057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59753358025 + 15329906596 = 244445^2 + 123814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75083264621 is a prime.

It is a super-2 number, since 2×75083264621² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 75083264623, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75083264623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37541632310 + 37541632311.

It is an arithmetic number, because the mean of its divisors is an integer number (37541632311).

Almost surely, 2^75083264621 is an apocalyptic number.

It is an amenable number.

75083264621 is a deficient number, since it is larger than the sum of its proper divisors (1).

75083264621 is an equidigital number, since it uses as much as digits as its factorization.

75083264621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 75083264621 in words is "seventy-five billion, eighty-three million, two hundred sixty-four thousand, six hundred twenty-one".