21825473373457 has 8 divisors (see below), whose sum is σ = 23514526616000. Its totient is φ = 20137873084560.

The previous prime is 21825473373443. The next prime is 21825473373533. The reversal of 21825473373457 is 75437337452812.

It is a happy number.

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 21825473373457 - 2⁷ = 21825473373329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21825473373395 and 21825473373404.

It is not an unprimeable number, because it can be changed into a prime (21825473376457) 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, 363207207 + ... + 363267292.

It is an arithmetic number, because the mean of its divisors is an integer number (2939315827000).

Almost surely, 2^{21825473373457} is an apocalyptic number.

It is an amenable number.

21825473373457 is a deficient number, since it is larger than the sum of its proper divisors (1689053242543).

21825473373457 is a wasteful number, since it uses less digits than its factorization.

21825473373457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726476823.

The product of its digits is 118540800, while the sum is 61.

The spelling of 21825473373457 in words is "twenty-one trillion, eight hundred twenty-five billion, four hundred seventy-three million, three hundred seventy-three thousand, four hundred fifty-seven".