15857287157157 has 16 divisors (see below), whose sum is σ = 22256115000000. Its totient is φ = 10015005711744.

The previous prime is 15857287157149. The next prime is 15857287157189. The reversal of 15857287157157 is 75175178275851.

It is not a de Polignac number, because 15857287157157 - 2³ = 15857287157149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15857287157091 and 15857287157100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15857287157147) 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, 3089719 + ... + 6423467.

It is an arithmetic number, because the mean of its divisors is an integer number (1391007187500).

Almost surely, 2^{15857287157157} is an apocalyptic number.

It is an amenable number.

15857287157157 is a deficient number, since it is larger than the sum of its proper divisors (6398827842843).

15857287157157 is a wasteful number, since it uses less digits than its factorization.

15857287157157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417220.

The product of its digits is 192080000, while the sum is 69.

The spelling of 15857287157157 in words is "fifteen trillion, eight hundred fifty-seven billion, two hundred eighty-seven million, one hundred fifty-seven thousand, one hundred fifty-seven".