39726631345 has 4 divisors (see below), whose sum is σ = 47671957620. Its totient is φ = 31781305072.

The previous prime is 39726631313. The next prime is 39726631381. The reversal of 39726631345 is 54313662793.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10359982656 + 29366648689 = 101784^2 + 171367^2 .

It is a cyclic number.

It is not a de Polignac number, because 39726631345 - 2⁵ = 39726631313 is a prime.

It is a super-3 number, since 3×39726631345³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 3972663130 + ... + 3972663139.

It is an arithmetic number, because the mean of its divisors is an integer number (11917989405).

Almost surely, 2^39726631345 is an apocalyptic number.

It is an amenable number.

39726631345 is a deficient number, since it is larger than the sum of its proper divisors (7945326275).

39726631345 is an equidigital number, since it uses as much as digits as its factorization.

39726631345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7945326274.

The product of its digits is 2449440, while the sum is 49.

The spelling of 39726631345 in words is "thirty-nine billion, seven hundred twenty-six million, six hundred thirty-one thousand, three hundred forty-five".