39139390651 has 16 divisors (see below), whose sum is σ = 43114694400. Its totient is φ = 35364925728.

The previous prime is 39139390637. The next prime is 39139390663. The reversal of 39139390651 is 15609393193.

It is a cyclic number.

It is not a de Polignac number, because 39139390651 - 2¹⁵ = 39139357883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39139390595 and 39139390604.

It is not an unprimeable number, because it can be changed into a prime (39139390691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22585 + ... + 280693.

It is an arithmetic number, because the mean of its divisors is an integer number (2694668400).

Almost surely, 2^39139390651 is an apocalyptic number.

39139390651 is a deficient number, since it is larger than the sum of its proper divisors (3975303749).

39139390651 is a wasteful number, since it uses less digits than its factorization.

39139390651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258498.

The product of its (nonzero) digits is 590490, while the sum is 49.

The spelling of 39139390651 in words is "thirty-nine billion, one hundred thirty-nine million, three hundred ninety thousand, six hundred fifty-one".