15157442247 has 8 divisors (see below), whose sum is σ = 20239173120. Its totient is φ = 10090336440.

The previous prime is 15157442231. The next prime is 15157442263. The reversal of 15157442247 is 74224475151.

It is an interprime number because it is at equal distance from previous prime (15157442231) and next prime (15157442263).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15157442247 - 2⁴ = 15157442231 is a prime.

It is a super-2 number, since 2×15157442247² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15157442199 and 15157442208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15157442347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3653847 + ... + 3657992.

It is an arithmetic number, because the mean of its divisors is an integer number (2529896640).

Almost surely, 2^15157442247 is an apocalyptic number.

15157442247 is a deficient number, since it is larger than the sum of its proper divisors (5081730873).

15157442247 is an equidigital number, since it uses as much as digits as its factorization.

15157442247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7312533.

The product of its digits is 313600, while the sum is 42.

The spelling of 15157442247 in words is "fifteen billion, one hundred fifty-seven million, four hundred forty-two thousand, two hundred forty-seven".