61604613607 has 8 divisors (see below), whose sum is σ = 61789547376. Its totient is φ = 61419739392.

The previous prime is 61604613593. The next prime is 61604613611. The reversal of 61604613607 is 70631640616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61604613607 - 2²⁷ = 61470395879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61604613607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61604113607) 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, 2897068 + ... + 2918254.

It is an arithmetic number, because the mean of its divisors is an integer number (7723693422).

Almost surely, 2^61604613607 is an apocalyptic number.

61604613607 is a deficient number, since it is larger than the sum of its proper divisors (184933769).

61604613607 is a wasteful number, since it uses less digits than its factorization.

61604613607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29777.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 61604613607 in words is "sixty-one billion, six hundred four million, six hundred thirteen thousand, six hundred seven".