157271082778 has 4 divisors (see below), whose sum is σ = 235906624170. Its totient is φ = 78635541388.

The previous prime is 157271082751. The next prime is 157271082803. The reversal of 157271082778 is 877280172751.

157271082778 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 121401374329 + 35869708449 = 348427^2 + 189393^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39317770693 + ... + 39317770696.

Almost surely, 2^157271082778 is an apocalyptic number.

157271082778 is a deficient number, since it is larger than the sum of its proper divisors (78635541392).

157271082778 is an equidigital number, since it uses as much as digits as its factorization.

157271082778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78635541391.

The product of its (nonzero) digits is 3073280, while the sum is 55.

The spelling of 157271082778 in words is "one hundred fifty-seven billion, two hundred seventy-one million, eighty-two thousand, seven hundred seventy-eight".