40245204512993 has 2 divisors, whose sum is σ = 40245204512994. Its totient is φ = 40245204512992.

The previous prime is 40245204512977. The next prime is 40245204513029. The reversal of 40245204512993 is 39921540254204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39625224650449 + 619979862544 = 6294857^2 + 787388^2 .

It is a cyclic number.

It is not a de Polignac number, because 40245204512993 - 2⁴ = 40245204512977 is a prime.

It is not a weakly prime, because it can be changed into another prime (40245201512993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20122602256496 + 20122602256497.

It is an arithmetic number, because the mean of its divisors is an integer number (20122602256497).

Almost surely, 2^{40245204512993} is an apocalyptic number.

It is an amenable number.

40245204512993 is a deficient number, since it is larger than the sum of its proper divisors (1).

40245204512993 is an equidigital number, since it uses as much as digits as its factorization.

40245204512993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 40245204512993 in words is "forty trillion, two hundred forty-five billion, two hundred four million, five hundred twelve thousand, nine hundred ninety-three".