65610617601 has 8 divisors (see below), whose sum is σ = 87482898880. Its totient is φ = 43739374032.

The previous prime is 65610617599. The next prime is 65610617629. The reversal of 65610617601 is 10671601656.

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

It is not a de Polignac number, because 65610617601 - 2¹ = 65610617599 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 65610617601.

It is not an unprimeable number, because it can be changed into a prime (65610617651) 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, 97450 + ... + 375123.

It is an arithmetic number, because the mean of its divisors is an integer number (10935362360).

Almost surely, 2^65610617601 is an apocalyptic number.

It is an amenable number.

65610617601 is a deficient number, since it is larger than the sum of its proper divisors (21872281279).

65610617601 is a wasteful number, since it uses less digits than its factorization.

65610617601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518855.

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 65610617601 in words is "sixty-five billion, six hundred ten million, six hundred seventeen thousand, six hundred one".