39977861323 has 2 divisors, whose sum is σ = 39977861324. Its totient is φ = 39977861322.

The previous prime is 39977861311. The next prime is 39977861327. The reversal of 39977861323 is 32316877993.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39977861323 - 2⁵ = 39977861291 is a prime.

It is a super-2 number, since 2×39977861323² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39977861327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19988930661 + 19988930662.

It is an arithmetic number, because the mean of its divisors is an integer number (19988930662).

Almost surely, 2^39977861323 is an apocalyptic number.

39977861323 is a deficient number, since it is larger than the sum of its proper divisors (1).

39977861323 is an equidigital number, since it uses as much as digits as its factorization.

39977861323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10287648, while the sum is 58.

The spelling of 39977861323 in words is "thirty-nine billion, nine hundred seventy-seven million, eight hundred sixty-one thousand, three hundred twenty-three".