177738011138 has 4 divisors (see below), whose sum is σ = 266607016710. Its totient is φ = 88869005568.

The previous prime is 177738011119. The next prime is 177738011167. The reversal of 177738011138 is 831110837771.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831110837771 = 59 ⋅14086624369.

It can be written as a sum of positive squares in only one way, i.e., 175349050009 + 2388961129 = 418747^2 + 48877^2 .

It is a junction number, because it is equal to n+sod(n) for n = 177738011092 and 177738011101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44434502783 + ... + 44434502786.

Almost surely, 2^177738011138 is an apocalyptic number.

177738011138 is a deficient number, since it is larger than the sum of its proper divisors (88869005572).

177738011138 is an equidigital number, since it uses as much as digits as its factorization.

177738011138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88869005571.

The product of its (nonzero) digits is 197568, while the sum is 47.

The spelling of 177738011138 in words is "one hundred seventy-seven billion, seven hundred thirty-eight million, eleven thousand, one hundred thirty-eight".