15493901442293 has 2 divisors, whose sum is σ = 15493901442294. Its totient is φ = 15493901442292.

The previous prime is 15493901442277. The next prime is 15493901442379. The reversal of 15493901442293 is 39224410939451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15455764429924 + 38137012369 = 3931382^2 + 195287^2 .

It is a cyclic number.

It is not a de Polignac number, because 15493901442293 - 2⁴ = 15493901442277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15493901442493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7746950721146 + 7746950721147.

It is an arithmetic number, because the mean of its divisors is an integer number (7746950721147).

Almost surely, 2^{15493901442293} is an apocalyptic number.

It is an amenable number.

15493901442293 is a deficient number, since it is larger than the sum of its proper divisors (1).

15493901442293 is an equidigital number, since it uses as much as digits as its factorization.

15493901442293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8398080, while the sum is 56.

The spelling of 15493901442293 in words is "fifteen trillion, four hundred ninety-three billion, nine hundred one million, four hundred forty-two thousand, two hundred ninety-three".