15734842157 has 2 divisors, whose sum is σ = 15734842158. Its totient is φ = 15734842156.

The previous prime is 15734842147. The next prime is 15734842181. The reversal of 15734842157 is 75124843751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15583527556 + 151314601 = 124834^2 + 12301^2 .

It is an emirp because it is prime and its reverse (75124843751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15734842157 - 2⁴ = 15734842141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15734842147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7867421078 + 7867421079.

It is an arithmetic number, because the mean of its divisors is an integer number (7867421079).

Almost surely, 2^15734842157 is an apocalyptic number.

It is an amenable number.

15734842157 is a deficient number, since it is larger than the sum of its proper divisors (1).

15734842157 is an equidigital number, since it uses as much as digits as its factorization.

15734842157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 940800, while the sum is 47.

The spelling of 15734842157 in words is "fifteen billion, seven hundred thirty-four million, eight hundred forty-two thousand, one hundred fifty-seven".