61475777228 has 24 divisors (see below), whose sum is σ = 111634489344. Its totient is φ = 29590592400.

The previous prime is 61475777227. The next prime is 61475777249. The reversal of 61475777228 is 82277757416.

It is not an unprimeable number, because it can be changed into a prime (61475777227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1274150 + ... + 1321517.

It is an arithmetic number, because the mean of its divisors is an integer number (4651437056).

Almost surely, 2^61475777228 is an apocalyptic number.

It is an amenable number.

61475777228 is a deficient number, since it is larger than the sum of its proper divisors (50158712116).

61475777228 is a wasteful number, since it uses less digits than its factorization.

61475777228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595893 (or 2595891 counting only the distinct ones).

The product of its digits is 9219840, while the sum is 56.

The spelling of 61475777228 in words is "sixty-one billion, four hundred seventy-five million, seven hundred seventy-seven thousand, two hundred twenty-eight".