158178226564 has 24 divisors (see below), whose sum is σ = 278899954200. Its totient is φ = 78493403136.

The previous prime is 158178226553. The next prime is 158178226579. The reversal of 158178226564 is 465622871851.

It can be written as a sum of positive squares in 4 ways, for example, as 13670286400 + 144507940164 = 116920^2 + 380142^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616294 + ... + 834370.

It is an arithmetic number, because the mean of its divisors is an integer number (11620831425).

Almost surely, 2^158178226564 is an apocalyptic number.

It is an amenable number.

158178226564 is a deficient number, since it is larger than the sum of its proper divisors (120721727636).

158178226564 is a wasteful number, since it uses less digits than its factorization.

158178226564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219447 (or 219445 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 55.

The spelling of 158178226564 in words is "one hundred fifty-eight billion, one hundred seventy-eight million, two hundred twenty-six thousand, five hundred sixty-four".