15678027157 has 4 divisors (see below), whose sum is σ = 16884029260. Its totient is φ = 14472025056.

The previous prime is 15678027151. The next prime is 15678027161. The reversal of 15678027157 is 75172087651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75172087651 = 23 ⋅3268351637.

It can be written as a sum of positive squares in 2 ways, for example, as 920879716 + 14757147441 = 30346^2 + 121479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15678027157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15678027157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15678027151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603001032 + ... + 603001057.

It is an arithmetic number, because the mean of its divisors is an integer number (4221007315).

Almost surely, 2^15678027157 is an apocalyptic number.

It is an amenable number.

15678027157 is a deficient number, since it is larger than the sum of its proper divisors (1206002103).

15678027157 is a wasteful number, since it uses less digits than its factorization.

15678027157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206002102.

The product of its (nonzero) digits is 823200, while the sum is 49.

The spelling of 15678027157 in words is "fifteen billion, six hundred seventy-eight million, twenty-seven thousand, one hundred fifty-seven".