157177813418 has 4 divisors (see below), whose sum is σ = 235766720130. Its totient is φ = 78588906708.

The previous prime is 157177813409. The next prime is 157177813421. The reversal of 157177813418 is 814318771751.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 814318771751 = 84629 ⋅9622219.

It can be written as a sum of positive squares in only one way, i.e., 97523170369 + 59654643049 = 312287^2 + 244243^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 157177813418.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39294453353 + ... + 39294453356.

Almost surely, 2^157177813418 is an apocalyptic number.

157177813418 is a deficient number, since it is larger than the sum of its proper divisors (78588906712).

157177813418 is an equidigital number, since it uses as much as digits as its factorization.

157177813418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78588906711.

The product of its digits is 1317120, while the sum is 53.

The spelling of 157177813418 in words is "one hundred fifty-seven billion, one hundred seventy-seven million, eight hundred thirteen thousand, four hundred eighteen".