159472031497 has 4 divisors (see below), whose sum is σ = 159684378496. Its totient is φ = 159259684500.

The previous prime is 159472031479. The next prime is 159472031507. The reversal of 159472031497 is 794130274951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159472031497 is a prime.

It is a super-2 number, since 2×159472031497² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159472032497) 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, 106172373 + ... + 106173874.

It is an arithmetic number, because the mean of its divisors is an integer number (39921094624).

Almost surely, 2^159472031497 is an apocalyptic number.

It is an amenable number.

159472031497 is a deficient number, since it is larger than the sum of its proper divisors (212346999).

159472031497 is an equidigital number, since it uses as much as digits as its factorization.

159472031497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212346998.

The product of its (nonzero) digits is 1905120, while the sum is 52.

The spelling of 159472031497 in words is "one hundred fifty-nine billion, four hundred seventy-two million, thirty-one thousand, four hundred ninety-seven".