61727278344 has 32 divisors (see below), whose sum is σ = 154426272000. Its totient is φ = 20561349312.

The previous prime is 61727278313. The next prime is 61727278381. The reversal of 61727278344 is 44387272716.

61727278344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865624 + ... + 934215.

It is an arithmetic number, because the mean of its divisors is an integer number (4825821000).

Almost surely, 2^61727278344 is an apocalyptic number.

It is an amenable number.

61727278344 is an abundant number, since it is smaller than the sum of its proper divisors (92698993656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61727278344 is a wasteful number, since it uses less digits than its factorization.

61727278344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801277 (or 1801273 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 51.

The spelling of 61727278344 in words is "sixty-one billion, seven hundred twenty-seven million, two hundred seventy-eight thousand, three hundred forty-four".