39642890485 has 16 divisors (see below), whose sum is σ = 53000324352. Its totient is φ = 28217761600.

The previous prime is 39642890477. The next prime is 39642890519. The reversal of 39642890485 is 58409824693.

39642890485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39642890485 - 2³ = 39642890477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7665286 + ... + 7670455.

It is an arithmetic number, because the mean of its divisors is an integer number (3312520272).

Almost surely, 2^39642890485 is an apocalyptic number.

It is an amenable number.

39642890485 is a deficient number, since it is larger than the sum of its proper divisors (13357433867).

39642890485 is a wasteful number, since it uses less digits than its factorization.

39642890485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15335804.

The product of its (nonzero) digits is 14929920, while the sum is 58.

The spelling of 39642890485 in words is "thirty-nine billion, six hundred forty-two million, eight hundred ninety thousand, four hundred eighty-five".