39242678513 has 2 divisors, whose sum is σ = 39242678514. Its totient is φ = 39242678512.

The previous prime is 39242678507. The next prime is 39242678557. The reversal of 39242678513 is 31587624293.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29052179809 + 10190498704 = 170447^2 + 100948^2 .

It is a cyclic number.

It is not a de Polignac number, because 39242678513 - 2¹⁰ = 39242677489 is a prime.

It is not a weakly prime, because it can be changed into another prime (39242978513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19621339256 + 19621339257.

It is an arithmetic number, because the mean of its divisors is an integer number (19621339257).

Almost surely, 2^39242678513 is an apocalyptic number.

It is an amenable number.

39242678513 is a deficient number, since it is larger than the sum of its proper divisors (1).

39242678513 is an equidigital number, since it uses as much as digits as its factorization.

39242678513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 50.

The spelling of 39242678513 in words is "thirty-nine billion, two hundred forty-two million, six hundred seventy-eight thousand, five hundred thirteen".