156922145897 has 4 divisors (see below), whose sum is σ = 171187795536. Its totient is φ = 142656496260.

The previous prime is 156922145879. The next prime is 156922145929. The reversal of 156922145897 is 798541229651.

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 not a de Polignac number, because 156922145897 - 2¹⁶ = 156922080361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156922145797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7132824803 + ... + 7132824824.

It is an arithmetic number, because the mean of its divisors is an integer number (42796948884).

Almost surely, 2^156922145897 is an apocalyptic number.

It is an amenable number.

156922145897 is a deficient number, since it is larger than the sum of its proper divisors (14265649639).

156922145897 is a wasteful number, since it uses less digits than its factorization.

156922145897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14265649638.

The product of its digits is 10886400, while the sum is 59.

Adding to 156922145897 its sum of digits (59), we get a square (156922145956 = 396134²).

The spelling of 156922145897 in words is "one hundred fifty-six billion, nine hundred twenty-two million, one hundred forty-five thousand, eight hundred ninety-seven".