15846638157 has 48 divisors (see below), whose sum is σ = 26490355840. Its totient is φ = 8941435776.

The previous prime is 15846638123. The next prime is 15846638161. The reversal of 15846638157 is 75183664851.

It is a happy number.

15846638157 is a `hidden beast` number, since 1 + 58 + 466 + 3 + 81 + 57 = 666.

It is not a de Polignac number, because 15846638157 - 2¹¹ = 15846636109 is a prime.

It is a super-2 number, since 2×15846638157² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15846630157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1607319 + ... + 1617147.

Almost surely, 2^15846638157 is an apocalyptic number.

It is an amenable number.

15846638157 is a deficient number, since it is larger than the sum of its proper divisors (10643717683).

15846638157 is a wasteful number, since it uses less digits than its factorization.

15846638157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10162 (or 10159 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The spelling of 15846638157 in words is "fifteen billion, eight hundred forty-six million, six hundred thirty-eight thousand, one hundred fifty-seven".