3729639686431 has 2 divisors, whose sum is σ = 3729639686432. Its totient is φ = 3729639686430.

The previous prime is 3729639686371. The next prime is 3729639686449. The reversal of 3729639686431 is 1346869369273.

It is a strong prime.

It is an emirp because it is prime and its reverse (1346869369273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3729639686431 - 2⁷ = 3729639686303 is a prime.

It is a super-2 number, since 2×3729639686431² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3729639686471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1864819843215 + 1864819843216.

It is an arithmetic number, because the mean of its divisors is an integer number (1864819843216).

Almost surely, 2^{3729639686431} is an apocalyptic number.

3729639686431 is a deficient number, since it is larger than the sum of its proper divisors (1).

3729639686431 is an equidigital number, since it uses as much as digits as its factorization.

3729639686431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211631616, while the sum is 67.

The spelling of 3729639686431 in words is "three trillion, seven hundred twenty-nine billion, six hundred thirty-nine million, six hundred eighty-six thousand, four hundred thirty-one".