61447839194 has 16 divisors (see below), whose sum is σ = 105446337408. Its totient is φ = 26307992112.

The previous prime is 61447839169. The next prime is 61447839199. The reversal of 61447839194 is 49193874416.

It is a super-2 number, since 2×61447839194² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61447839199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2218757 + ... + 2246280.

It is an arithmetic number, because the mean of its divisors is an integer number (6590396088).

Almost surely, 2^61447839194 is an apocalyptic number.

61447839194 is a deficient number, since it is larger than the sum of its proper divisors (43998498214).

61447839194 is a wasteful number, since it uses less digits than its factorization.

61447839194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4466029.

The product of its digits is 5225472, while the sum is 56.

The spelling of 61447839194 in words is "sixty-one billion, four hundred forty-seven million, eight hundred thirty-nine thousand, one hundred ninety-four".