75521362313 has 2 divisors, whose sum is σ = 75521362314. Its totient is φ = 75521362312.

The previous prime is 75521362277. The next prime is 75521362387. The reversal of 75521362313 is 31326312557.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68349304969 + 7172057344 = 261437^2 + 84688^2 .

It is an emirp because it is prime and its reverse (31326312557) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75521362313 is a prime.

It is a super-2 number, since 2×75521362313² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75521362913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37760681156 + 37760681157.

It is an arithmetic number, because the mean of its divisors is an integer number (37760681157).

Almost surely, 2^75521362313 is an apocalyptic number.

It is an amenable number.

75521362313 is a deficient number, since it is larger than the sum of its proper divisors (1).

75521362313 is an equidigital number, since it uses as much as digits as its factorization.

75521362313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 38.

The spelling of 75521362313 in words is "seventy-five billion, five hundred twenty-one million, three hundred sixty-two thousand, three hundred thirteen".