16335500641 has 4 divisors (see below), whose sum is σ = 16336063492. Its totient is φ = 16334937792.

The previous prime is 16335500633. The next prime is 16335500653. The reversal of 16335500641 is 14600553361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14600553361 = 163 ⋅89573947.

It can be written as a sum of positive squares in 2 ways, for example, as 2025360016 + 14310140625 = 45004^2 + 119625^2 .

It is a cyclic number.

It is not a de Polignac number, because 16335500641 - 2³ = 16335500633 is a prime.

It is a super-2 number, since 2×16335500641² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16335500597 and 16335500606.

It is not an unprimeable number, because it can be changed into a prime (16335504641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235380 + ... + 296773.

It is an arithmetic number, because the mean of its divisors is an integer number (4084015873).

Almost surely, 2^16335500641 is an apocalyptic number.

It is an amenable number.

16335500641 is a deficient number, since it is larger than the sum of its proper divisors (562851).

16335500641 is an equidigital number, since it uses as much as digits as its factorization.

16335500641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562850.

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 16335500641 in words is "sixteen billion, three hundred thirty-five million, five hundred thousand, six hundred forty-one".