21694485574080 has 336 divisors, whose sum is σ = 86192077312224. Its totient is φ = 4949900328960.

The previous prime is 21694485574067. The next prime is 21694485574093. The reversal of 21694485574080 is 8047558449612.

It is a happy number.

21694485574080 is a `hidden beast` number, since 2 + 1 + 6 + 9 + 4 + 485 + 5 + 74 + 0 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (21694485574067) and next prime (21694485574093).

It is a junction number, because it is equal to n+sod(n) for n = 21694485573999 and 21694485574017.

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, 19602637 + ... + 20679756.

Almost surely, 2^{21694485574080} is an apocalyptic number.

21694485574080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21694485574080 is an abundant number, since it is smaller than the sum of its proper divisors (64497591738144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21694485574080 is a wasteful number, since it uses less digits than its factorization.

21694485574080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40282444 (or 40282431 counting only the distinct ones).

The product of its (nonzero) digits is 77414400, while the sum is 63.

The spelling of 21694485574080 in words is "twenty-one trillion, six hundred ninety-four billion, four hundred eighty-five million, five hundred seventy-four thousand, eighty".