75363631643 has 2 divisors, whose sum is σ = 75363631644. Its totient is φ = 75363631642.

The previous prime is 75363631639. The next prime is 75363631657. The reversal of 75363631643 is 34613636357.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75363631643 - 2² = 75363631639 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (75363631663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37681815821 + 37681815822.

It is an arithmetic number, because the mean of its divisors is an integer number (37681815822).

Almost surely, 2^75363631643 is an apocalyptic number.

75363631643 is a deficient number, since it is larger than the sum of its proper divisors (1).

75363631643 is an equidigital number, since it uses as much as digits as its factorization.

75363631643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 47.

The spelling of 75363631643 in words is "seventy-five billion, three hundred sixty-three million, six hundred thirty-one thousand, six hundred forty-three".