61345646601 has 16 divisors (see below), whose sum is σ = 82482364800. Its totient is φ = 40553941760.

The previous prime is 61345646587. The next prime is 61345646627. The reversal of 61345646601 is 10664654316.

It is a cyclic number.

It is not a de Polignac number, because 61345646601 - 2⁷ = 61345646473 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61345646641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149356 + ... + 380786.

It is an arithmetic number, because the mean of its divisors is an integer number (5155147800).

Almost surely, 2^61345646601 is an apocalyptic number.

It is an amenable number.

61345646601 is a deficient number, since it is larger than the sum of its proper divisors (21136718199).

61345646601 is a wasteful number, since it uses less digits than its factorization.

61345646601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232176.

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 61345646601 in words is "sixty-one billion, three hundred forty-five million, six hundred forty-six thousand, six hundred one".