61354448228 has 6 divisors (see below), whose sum is σ = 107370284406. Its totient is φ = 30677224112.

The previous prime is 61354448209. The next prime is 61354448249. The reversal of 61354448228 is 82284445316.

It can be written as a sum of positive squares in only one way, i.e., 58812070144 + 2542378084 = 242512^2 + 50422^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7669306025 + ... + 7669306032.

It is an arithmetic number, because the mean of its divisors is an integer number (17895047401).

Almost surely, 2^61354448228 is an apocalyptic number.

It is an amenable number.

61354448228 is a deficient number, since it is larger than the sum of its proper divisors (46015836178).

61354448228 is a wasteful number, since it uses less digits than its factorization.

61354448228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15338612061 (or 15338612059 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 47.

The spelling of 61354448228 in words is "sixty-one billion, three hundred fifty-four million, four hundred forty-eight thousand, two hundred twenty-eight".