158091198078 has 32 divisors (see below), whose sum is σ = 345749523840. Its totient is φ = 47792080160.

The previous prime is 158091198059. The next prime is 158091198091. The reversal of 158091198078 is 870891190851.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2830725 + ... + 2886032.

It is an arithmetic number, because the mean of its divisors is an integer number (10804672620).

Almost surely, 2^158091198078 is an apocalyptic number.

158091198078 is an abundant number, since it is smaller than the sum of its proper divisors (187658325762).

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

158091198078 is a wasteful number, since it uses less digits than its factorization.

158091198078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5717192.

The product of its (nonzero) digits is 1451520, while the sum is 57.

The spelling of 158091198078 in words is "one hundred fifty-eight billion, ninety-one million, one hundred ninety-eight thousand, seventy-eight".