75053921291 has 2 divisors, whose sum is σ = 75053921292. Its totient is φ = 75053921290.

The previous prime is 75053921273. The next prime is 75053921297. The reversal of 75053921291 is 19212935057.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (19212935057) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75053921291 is a prime.

It is a super-2 number, since 2×75053921291² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75053921297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37526960645 + 37526960646.

It is an arithmetic number, because the mean of its divisors is an integer number (37526960646).

Almost surely, 2^75053921291 is an apocalyptic number.

75053921291 is a deficient number, since it is larger than the sum of its proper divisors (1).

75053921291 is an equidigital number, since it uses as much as digits as its factorization.

75053921291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 170100, while the sum is 44.

The spelling of 75053921291 in words is "seventy-five billion, fifty-three million, nine hundred twenty-one thousand, two hundred ninety-one".