61257274244 has 6 divisors (see below), whose sum is σ = 107200229934. Its totient is φ = 30628637120.

The previous prime is 61257274237. The next prime is 61257274249. The reversal of 61257274244 is 44247275216.

61257274244 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 only one way, i.e., 56911827844 + 4345446400 = 238562^2 + 65920^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61257274195 and 61257274204.

It is not an unprimeable number, because it can be changed into a prime (61257274249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7657159277 + ... + 7657159284.

It is an arithmetic number, because the mean of its divisors is an integer number (17866704989).

Almost surely, 2^61257274244 is an apocalyptic number.

It is an amenable number.

61257274244 is a deficient number, since it is larger than the sum of its proper divisors (45942955690).

61257274244 is a wasteful number, since it uses less digits than its factorization.

61257274244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15314318565 (or 15314318563 counting only the distinct ones).

The product of its digits is 752640, while the sum is 44.

The spelling of 61257274244 in words is "sixty-one billion, two hundred fifty-seven million, two hundred seventy-four thousand, two hundred forty-four".