16465656461 has 8 divisors (see below), whose sum is σ = 17183404800. Its totient is φ = 15748062352.

The previous prime is 16465656437. The next prime is 16465656469.

16465656461 is nontrivially palindromic in base 10.

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 16465656461 - 2⁶ = 16465656397 is a prime.

It is a super-2 number, since 2×16465656461² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16465656469) 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, 215231 + ... + 281523.

It is an arithmetic number, because the mean of its divisors is an integer number (2147925600).

Almost surely, 2^16465656461 is an apocalyptic number.

It is an amenable number.

16465656461 is a deficient number, since it is larger than the sum of its proper divisors (717748339).

16465656461 is a wasteful number, since it uses less digits than its factorization.

16465656461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77115.

The product of its digits is 3110400, while the sum is 50.

The spelling of 16465656461 in words is "sixteen billion, four hundred sixty-five million, six hundred fifty-six thousand, four hundred sixty-one".