39858644157157 has 24 divisors (see below), whose sum is σ = 48206191246080. Its totient is φ = 32824610138880.

The previous prime is 39858644157127. The next prime is 39858644157187. The reversal of 39858644157157 is 75175144685893.

It is an interprime number because it is at equal distance from previous prime (39858644157127) and next prime (39858644157187).

It is a de Polignac number, because none of the positive numbers 2^k-39858644157157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39858644157157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39858644157107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94177548 + ... + 94599829.

It is an arithmetic number, because the mean of its divisors is an integer number (2008591301920).

Almost surely, 2^{39858644157157} is an apocalyptic number.

It is an amenable number.

39858644157157 is a deficient number, since it is larger than the sum of its proper divisors (8347547088923).

39858644157157 is a wasteful number, since it uses less digits than its factorization.

39858644157157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188777561 (or 188777554 counting only the distinct ones).

The product of its digits is 1016064000, while the sum is 73.

The spelling of 39858644157157 in words is "thirty-nine trillion, eight hundred fifty-eight billion, six hundred forty-four million, one hundred fifty-seven thousand, one hundred fifty-seven".