39891355357 has 12 divisors (see below), whose sum is σ = 46432984320. Its totient is φ = 34171402776.

The previous prime is 39891355331. The next prime is 39891355369. The reversal of 39891355357 is 75355319893.

It is not a de Polignac number, because 39891355357 - 2¹⁹ = 39890831069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39891355307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172093 + ... + 330754.

It is an arithmetic number, because the mean of its divisors is an integer number (3869415360).

Almost surely, 2^39891355357 is an apocalyptic number.

It is an amenable number.

39891355357 is a deficient number, since it is larger than the sum of its proper divisors (6541628963).

39891355357 is a wasteful number, since it uses less digits than its factorization.

39891355357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504480 (or 504473 counting only the distinct ones).

The product of its digits is 15309000, while the sum is 58.

The spelling of 39891355357 in words is "thirty-nine billion, eight hundred ninety-one million, three hundred fifty-five thousand, three hundred fifty-seven".