39462506497 has 2 divisors, whose sum is σ = 39462506498. Its totient is φ = 39462506496.

The previous prime is 39462506491. The next prime is 39462506509. The reversal of 39462506497 is 79460526493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34626138561 + 4836367936 = 186081^2 + 69544^2 .

It is an emirp because it is prime and its reverse (79460526493) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39462506497 is a prime.

It is a super-2 number, since 2×39462506497² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39462506491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19731253248 + 19731253249.

It is an arithmetic number, because the mean of its divisors is an integer number (19731253249).

Almost surely, 2^39462506497 is an apocalyptic number.

It is an amenable number.

39462506497 is a deficient number, since it is larger than the sum of its proper divisors (1).

39462506497 is an equidigital number, since it uses as much as digits as its factorization.

39462506497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9797760, while the sum is 55.

The spelling of 39462506497 in words is "thirty-nine billion, four hundred sixty-two million, five hundred six thousand, four hundred ninety-seven".