21738383667369 has 12 divisors (see below), whose sum is σ = 31797354451200. Its totient is φ = 14308809502104.

The previous prime is 21738383667311. The next prime is 21738383667373. The reversal of 21738383667369 is 96376638383712.

21738383667369 is a `hidden beast` number, since 2 + 173 + 8 + 3 + 8 + 36 + 67 + 369 = 666.

It is not a de Polignac number, because 21738383667369 - 2²⁰ = 21738382618793 is a prime.

It is a super-2 number, since 2×21738383667369² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21738383667297 and 21738383667306.

It is not an unprimeable number, because it can be changed into a prime (21738383667269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15287188929 + ... + 15287190350.

It is an arithmetic number, because the mean of its divisors is an integer number (2649779537600).

Almost surely, 2^{21738383667369} is an apocalyptic number.

It is an amenable number.

21738383667369 is a deficient number, since it is larger than the sum of its proper divisors (10058970783831).

21738383667369 is a wasteful number, since it uses less digits than its factorization.

21738383667369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30574379364 (or 30574379361 counting only the distinct ones).

The product of its digits is 987614208, while the sum is 72.

The spelling of 21738383667369 in words is "twenty-one trillion, seven hundred thirty-eight billion, three hundred eighty-three million, six hundred sixty-seven thousand, three hundred sixty-nine".