61794447065 has 8 divisors (see below), whose sum is σ = 79857439368. Its totient is φ = 45632822400.

The previous prime is 61794447049. The next prime is 61794447073. The reversal of 61794447065 is 56074449716.

It can be written as a sum of positive squares in 4 ways, for example, as 3296252569 + 58498194496 = 57413^2 + 241864^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61794447065 - 2⁴ = 61794447049 is a prime.

It is a super-2 number, since 2×61794447065² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61794446998 and 61794447016.

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, 475341836 + ... + 475341965.

It is an arithmetic number, because the mean of its divisors is an integer number (9982179921).

Almost surely, 2^61794447065 is an apocalyptic number.

61794447065 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61794447065 is a deficient number, since it is larger than the sum of its proper divisors (18062992303).

61794447065 is a wasteful number, since it uses less digits than its factorization.

61794447065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950683819.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 61794447065 in words is "sixty-one billion, seven hundred ninety-four million, four hundred forty-seven thousand, sixty-five".