158779791628 has 24 divisors (see below), whose sum is σ = 278866796544. Its totient is φ = 79103946000.

The previous prime is 158779791619. The next prime is 158779791629. The reversal of 158779791628 is 826197977851.

It is a super-2 number, since 2×158779791628² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (158779791629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1642683 + ... + 1736653.

It is an arithmetic number, because the mean of its divisors is an integer number (11619449856).

Almost surely, 2^158779791628 is an apocalyptic number.

It is an amenable number.

158779791628 is a deficient number, since it is larger than the sum of its proper divisors (120087004916).

158779791628 is a wasteful number, since it uses less digits than its factorization.

158779791628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95493 (or 95491 counting only the distinct ones).

The product of its digits is 106686720, while the sum is 70.

The spelling of 158779791628 in words is "one hundred fifty-eight billion, seven hundred seventy-nine million, seven hundred ninety-one thousand, six hundred twenty-eight".