61178516338 has 8 divisors (see below), whose sum is σ = 92713834332. Its totient is φ = 30273904896.

The previous prime is 61178516303. The next prime is 61178516351. The reversal of 61178516338 is 83361587116.

61178516338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 56279496289 + 4899020049 = 237233^2 + 69993^2 .

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

It is a super-2 number, since 2×61178516338² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61178516291 and 61178516300.

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, 157676395 + ... + 157676782.

Almost surely, 2^61178516338 is an apocalyptic number.

61178516338 is a deficient number, since it is larger than the sum of its proper divisors (31535317994).

61178516338 is a wasteful number, since it uses less digits than its factorization.

61178516338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315353276.

The product of its digits is 725760, while the sum is 49.

The spelling of 61178516338 in words is "sixty-one billion, one hundred seventy-eight million, five hundred sixteen thousand, three hundred thirty-eight".