21283783718401 has 8 divisors (see below), whose sum is σ = 22535811689184. Its totient is φ = 20031760269120.

The previous prime is 21283783718381. The next prime is 21283783718411. The reversal of 21283783718401 is 10481738738212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21283783718401 - 2⁴¹ = 19084760462849 is a prime.

It is a super-4 number, since 4×21283783718401⁴ (a number of 54 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21283783718411) 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, 15843286 + ... + 17134096.

It is an arithmetic number, because the mean of its divisors is an integer number (2816976461148).

Almost surely, 2^{21283783718401} is an apocalyptic number.

It is an amenable number.

21283783718401 is a deficient number, since it is larger than the sum of its proper divisors (1252027970783).

21283783718401 is a wasteful number, since it uses less digits than its factorization.

21283783718401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260751.

The product of its (nonzero) digits is 3612672, while the sum is 55.

The spelling of 21283783718401 in words is "twenty-one trillion, two hundred eighty-three billion, seven hundred eighty-three million, seven hundred eighteen thousand, four hundred one".