61604113607 has 2 divisors, whose sum is σ = 61604113608. Its totient is φ = 61604113606.

The previous prime is 61604113577. The next prime is 61604113609. The reversal of 61604113607 is 70631140616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61604113607 - 2¹⁴ = 61604097223 is a prime.

Together with 61604113609, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61604113609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30802056803 + 30802056804.

It is an arithmetic number, because the mean of its divisors is an integer number (30802056804).

Almost surely, 2^61604113607 is an apocalyptic number.

61604113607 is a deficient number, since it is larger than the sum of its proper divisors (1).

61604113607 is an equidigital number, since it uses as much as digits as its factorization.

61604113607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 61604113607 in words is "sixty-one billion, six hundred four million, one hundred thirteen thousand, six hundred seven".