54556778194 has 4 divisors (see below), whose sum is σ = 81835167294. Its totient is φ = 27278389096.

The previous prime is 54556778183. The next prime is 54556778219. The reversal of 54556778194 is 49187765545.

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., 52292255625 + 2264522569 = 228675^2 + 47587^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13639194547 + ... + 13639194550.

Almost surely, 2^54556778194 is an apocalyptic number.

54556778194 is a deficient number, since it is larger than the sum of its proper divisors (27278389100).

54556778194 is a wasteful number, since it uses less digits than its factorization.

54556778194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27278389099.

The product of its digits is 42336000, while the sum is 61.

The spelling of 54556778194 in words is "fifty-four billion, five hundred fifty-six million, seven hundred seventy-eight thousand, one hundred ninety-four".