100456395493 has 2 divisors, whose sum is σ = 100456395494. Its totient is φ = 100456395492.

The previous prime is 100456395491. The next prime is 100456395539. The reversal of 100456395493 is 394593654001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64736151489 + 35720244004 = 254433^2 + 188998^2 .

It is an emirp because it is prime and its reverse (394593654001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100456395493 - 2¹ = 100456395491 is a prime.

Together with 100456395491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100456395491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50228197746 + 50228197747.

It is an arithmetic number, because the mean of its divisors is an integer number (50228197747).

Almost surely, 2^100456395493 is an apocalyptic number.

It is an amenable number.

100456395493 is a deficient number, since it is larger than the sum of its proper divisors (1).

100456395493 is an equidigital number, since it uses as much as digits as its factorization.

100456395493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The spelling of 100456395493 in words is "one hundred billion, four hundred fifty-six million, three hundred ninety-five thousand, four hundred ninety-three".