157823757478 has 8 divisors (see below), whose sum is σ = 239732290080. Its totient is φ = 77912994120.

The previous prime is 157823757467. The next prime is 157823757521. The reversal of 157823757478 is 874757328751.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499442113 + ... + 499442428.

It is an arithmetic number, because the mean of its divisors is an integer number (29966536260).

Almost surely, 2^157823757478 is an apocalyptic number.

157823757478 is a deficient number, since it is larger than the sum of its proper divisors (81908532602).

157823757478 is an equidigital number, since it uses as much as digits as its factorization.

157823757478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998884622.

The product of its digits is 92198400, while the sum is 64.

The spelling of 157823757478 in words is "one hundred fifty-seven billion, eight hundred twenty-three million, seven hundred fifty-seven thousand, four hundred seventy-eight".