158778877850 has 24 divisors (see below), whose sum is σ = 295348159008. Its totient is φ = 63507369200.

The previous prime is 158778877841. The next prime is 158778877853. The reversal of 158778877850 is 58778877851.

It is not an unprimeable number, because it can be changed into a prime (158778877853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 728045 + ... + 920655.

It is an arithmetic number, because the mean of its divisors is an integer number (12306173292).

Almost surely, 2^158778877850 is an apocalyptic number.

158778877850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

158778877850 is a deficient number, since it is larger than the sum of its proper divisors (136569281158).

158778877850 is a wasteful number, since it uses less digits than its factorization.

158778877850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209110 (or 209105 counting only the distinct ones).

The product of its (nonzero) digits is 245862400, while the sum is 71.

Subtracting from 158778877850 its reverse (58778877851), we obtain a palindrome (99999999999).

The spelling of 158778877850 in words is "one hundred fifty-eight billion, seven hundred seventy-eight million, eight hundred seventy-seven thousand, eight hundred fifty".