77851158 has 48 divisors (see below), whose sum is σ = 195605760. Its totient is φ = 20219760.

The previous prime is 77851153. The next prime is 77851181. The reversal of 77851158 is 85115877.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77851153) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2578 + ... + 12741.

It is an arithmetic number, because the mean of its divisors is an integer number (4075120).

Almost surely, 2^77851158 is an apocalyptic number.

77851158 is an abundant number, since it is smaller than the sum of its proper divisors (117754602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77851158 is a wasteful number, since it uses less digits than its factorization.

77851158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15353 (or 15342 counting only the distinct ones).

The product of its digits is 78400, while the sum is 42.

The square root of 77851158 is about 8823.3303236363. The cubic root of 77851158 is about 426.9939211584.

The spelling of 77851158 in words is "seventy-seven million, eight hundred fifty-one thousand, one hundred fifty-eight".