16640362461 has 8 divisors (see below), whose sum is σ = 22250004480. Its totient is φ = 11062147712.

The previous prime is 16640362457. The next prime is 16640362471. The reversal of 16640362461 is 16426304661.

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 16640362461 - 2² = 16640362457 is a prime.

It is a super-3 number, since 3×16640362461³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16640362411) 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, 7855581 + ... + 7857698.

It is an arithmetic number, because the mean of its divisors is an integer number (2781250560).

Almost surely, 2^16640362461 is an apocalyptic number.

It is an amenable number.

16640362461 is a deficient number, since it is larger than the sum of its proper divisors (5609642019).

16640362461 is a wasteful number, since it uses less digits than its factorization.

16640362461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15713635.

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 16640362461 in words is "sixteen billion, six hundred forty million, three hundred sixty-two thousand, four hundred sixty-one".