61670684204847 has 6 divisors (see below), whose sum is σ = 89079877184792. Its totient is φ = 41113789469892.

The previous prime is 61670684204837. The next prime is 61670684204923. The reversal of 61670684204847 is 74840248607616.

61670684204847 is a `hidden beast` number, since 6 + 1 + 6 + 70 + 6 + 84 + 2 + 0 + 484 + 7 = 666.

It is not a de Polignac number, because 61670684204847 - 2⁶ = 61670684204783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61670684204837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3426149122483 + ... + 3426149122500.

Almost surely, 2^{61670684204847} is an apocalyptic number.

61670684204847 is a deficient number, since it is larger than the sum of its proper divisors (27409192979945).

61670684204847 is a wasteful number, since it uses less digits than its factorization.

61670684204847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6852298244989 (or 6852298244986 counting only the distinct ones).

The product of its (nonzero) digits is 86704128, while the sum is 63.

The spelling of 61670684204847 in words is "sixty-one trillion, six hundred seventy billion, six hundred eighty-four million, two hundred four thousand, eight hundred forty-seven".