39377834497 has 2 divisors, whose sum is σ = 39377834498. Its totient is φ = 39377834496.

The previous prime is 39377834471. The next prime is 39377834521. The reversal of 39377834497 is 79443877393.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27767556496 + 11610278001 = 166636^2 + 107751^2 .

It is a cyclic number.

It is not a de Polignac number, because 39377834497 - 2⁷ = 39377834369 is a prime.

It is a super-2 number, since 2×39377834497² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39377834407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19688917248 + 19688917249.

It is an arithmetic number, because the mean of its divisors is an integer number (19688917249).

Almost surely, 2^39377834497 is an apocalyptic number.

It is an amenable number.

39377834497 is a deficient number, since it is larger than the sum of its proper divisors (1).

39377834497 is an equidigital number, since it uses as much as digits as its factorization.

39377834497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96018048, while the sum is 64.

It can be divided in two parts, 393778 and 34497, that added together give a triangular number (428275 = T₉₂₅).

The spelling of 39377834497 in words is "thirty-nine billion, three hundred seventy-seven million, eight hundred thirty-four thousand, four hundred ninety-seven".