75656314381 has 2 divisors, whose sum is σ = 75656314382. Its totient is φ = 75656314380.

The previous prime is 75656314247. The next prime is 75656314423. The reversal of 75656314381 is 18341365657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73256294281 + 2400020100 = 270659^2 + 48990^2 .

It is an emirp because it is prime and its reverse (18341365657) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75656314381 - 2⁹ = 75656313869 is a prime.

It is a super-2 number, since 2×75656314381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75656314081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37828157190 + 37828157191.

It is an arithmetic number, because the mean of its divisors is an integer number (37828157191).

Almost surely, 2^75656314381 is an apocalyptic number.

It is an amenable number.

75656314381 is a deficient number, since it is larger than the sum of its proper divisors (1).

75656314381 is an equidigital number, since it uses as much as digits as its factorization.

75656314381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 49.

The spelling of 75656314381 in words is "seventy-five billion, six hundred fifty-six million, three hundred fourteen thousand, three hundred eighty-one".