16214061645 has 48 divisors (see below), whose sum is σ = 28761288192. Its totient is φ = 8446129920.

The previous prime is 16214061571. The next prime is 16214061659. The reversal of 16214061645 is 54616041261.

16214061645 is a `hidden beast` number, since 1 + 6 + 2 + 1 + 4 + 0 + 6 + 1 + 645 = 666.

It is not a de Polignac number, because 16214061645 - 2¹² = 16214057549 is a prime.

It is a super-3 number, since 3×16214061645³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1056225 + ... + 1071465.

It is an arithmetic number, because the mean of its divisors is an integer number (599193504).

Almost surely, 2^16214061645 is an apocalyptic number.

16214061645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16214061645 is a deficient number, since it is larger than the sum of its proper divisors (12547226547).

16214061645 is a wasteful number, since it uses less digits than its factorization.

16214061645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15802 (or 15799 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 16214061645 in words is "sixteen billion, two hundred fourteen million, sixty-one thousand, six hundred forty-five".