65612503661 has 8 divisors (see below), whose sum is σ = 65677574400. Its totient is φ = 65547469152.

The previous prime is 65612503643. The next prime is 65612503667. The reversal of 65612503661 is 16630521656.

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 65612503661 - 2¹⁴ = 65612487277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65612503667) 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, 4774346 + ... + 4788068.

It is an arithmetic number, because the mean of its divisors is an integer number (8209696800).

Almost surely, 2^65612503661 is an apocalyptic number.

It is an amenable number.

65612503661 is a deficient number, since it is larger than the sum of its proper divisors (65070739).

65612503661 is a wasteful number, since it uses less digits than its factorization.

65612503661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18115.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 65612503661 in words is "sixty-five billion, six hundred twelve million, five hundred three thousand, six hundred sixty-one".