61604677067 has 2 divisors, whose sum is σ = 61604677068. Its totient is φ = 61604677066.

The previous prime is 61604677051. The next prime is 61604677093. The reversal of 61604677067 is 76077640616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61604677067 - 2⁴ = 61604677051 is a prime.

It is not a weakly prime, because it can be changed into another prime (61604977067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30802338533 + 30802338534.

It is an arithmetic number, because the mean of its divisors is an integer number (30802338534).

Almost surely, 2^61604677067 is an apocalyptic number.

61604677067 is a deficient number, since it is larger than the sum of its proper divisors (1).

61604677067 is an equidigital number, since it uses as much as digits as its factorization.

61604677067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1778112, while the sum is 50.

The spelling of 61604677067 in words is "sixty-one billion, six hundred four million, six hundred seventy-seven thousand, sixty-seven".