158728666754 has 36 divisors (see below), whose sum is σ = 280812269394. Its totient is φ = 67094479872.

The previous prime is 158728666727. The next prime is 158728666799. The reversal of 158728666754 is 457666827851.

It can be written as a sum of positive squares in 3 ways, for example, as 154273771729 + 4454895025 = 392777^2 + 66745^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 370274 + ... + 674210.

Almost surely, 2^158728666754 is an apocalyptic number.

158728666754 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

158728666754 is a deficient number, since it is larger than the sum of its proper divisors (122083602640).

158728666754 is an equidigital number, since it uses as much as digits as its factorization.

158728666754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304099 (or 304019 counting only the distinct ones).

The product of its digits is 135475200, while the sum is 65.

The spelling of 158728666754 in words is "one hundred fifty-eight billion, seven hundred twenty-eight million, six hundred sixty-six thousand, seven hundred fifty-four".