61206785847 has 6 divisors (see below), whose sum is σ = 88409801792. Its totient is φ = 40804523892.

The previous prime is 61206785821. The next prime is 61206785951. The reversal of 61206785847 is 74858760216.

It is not a de Polignac number, because 61206785847 - 2⁷ = 61206785719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61206785793 and 61206785802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61206785807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3400376983 + ... + 3400377000.

Almost surely, 2^61206785847 is an apocalyptic number.

61206785847 is a deficient number, since it is larger than the sum of its proper divisors (27203015945).

61206785847 is a wasteful number, since it uses less digits than its factorization.

61206785847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6800753989 (or 6800753986 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 61206785847 in words is "sixty-one billion, two hundred six million, seven hundred eighty-five thousand, eight hundred forty-seven".