158117995947 has 16 divisors (see below), whose sum is σ = 215294400000. Its totient is φ = 103191746784.

The previous prime is 158117995897. The next prime is 158117995961. The reversal of 158117995947 is 749599711851.

It is not a de Polignac number, because 158117995947 - 2¹¹ = 158117993899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158117991947) 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, 1826572 + ... + 1911177.

It is an arithmetic number, because the mean of its divisors is an integer number (13455900000).

Almost surely, 2^158117995947 is an apocalyptic number.

158117995947 is a deficient number, since it is larger than the sum of its proper divisors (57176404053).

158117995947 is a wasteful number, since it uses less digits than its factorization.

158117995947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738050.

The product of its digits is 28576800, while the sum is 66.

The spelling of 158117995947 in words is "one hundred fifty-eight billion, one hundred seventeen million, nine hundred ninety-five thousand, nine hundred forty-seven".