61309667044 has 6 divisors (see below), whose sum is σ = 107291917334. Its totient is φ = 30654833520.

The previous prime is 61309666991. The next prime is 61309667059. The reversal of 61309667044 is 44076690316.

It is a happy number.

61309667044 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., 46015398144 + 15294268900 = 214512^2 + 123670^2 .

It is a super-2 number, since 2×61309667044² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61309666985 and 61309667003.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7663708377 + ... + 7663708384.

Almost surely, 2^61309667044 is an apocalyptic number.

It is an amenable number.

61309667044 is a deficient number, since it is larger than the sum of its proper divisors (45982250290).

61309667044 is a wasteful number, since it uses less digits than its factorization.

61309667044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15327416765 (or 15327416763 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 61309667044 in words is "sixty-one billion, three hundred nine million, six hundred sixty-seven thousand, forty-four".