39742744234993 has 2 divisors, whose sum is σ = 39742744234994. Its totient is φ = 39742744234992.

The previous prime is 39742744234871. The next prime is 39742744235057. The reversal of 39742744234993 is 39943244724793.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35006427724129 + 4736316510864 = 5916623^2 + 2176308^2 .

It is a cyclic number.

It is not a de Polignac number, because 39742744234993 - 2¹⁷ = 39742744103921 is a prime.

It is a super-4 number, since 4×39742744234993⁴ (a number of 55 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (39742744234493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19871372117496 + 19871372117497.

It is an arithmetic number, because the mean of its divisors is an integer number (19871372117497).

Almost surely, 2^{39742744234993} is an apocalyptic number.

It is an amenable number.

39742744234993 is a deficient number, since it is larger than the sum of its proper divisors (1).

39742744234993 is an equidigital number, since it uses as much as digits as its factorization.

39742744234993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987614208, while the sum is 70.

The spelling of 39742744234993 in words is "thirty-nine trillion, seven hundred forty-two billion, seven hundred forty-four million, two hundred thirty-four thousand, nine hundred ninety-three".