21404131114745 has 8 divisors (see below), whose sum is σ = 25939263846600. Its totient is φ = 16953767219200.

The previous prime is 21404131114711. The next prime is 21404131114757. The reversal of 21404131114745 is 54741113140412.

It can be written as a sum of positive squares in 4 ways, for example, as 9925499026576 + 11478632088169 = 3150476^2 + 3388013^2 .

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

It is not a de Polignac number, because 21404131114745 - 2⁸ = 21404131114489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21404131114699 and 21404131114708.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21192208520 + ... + 21192209529.

It is an arithmetic number, because the mean of its divisors is an integer number (3242407980825).

Almost surely, 2^{21404131114745} is an apocalyptic number.

It is an amenable number.

21404131114745 is a deficient number, since it is larger than the sum of its proper divisors (4535132731855).

21404131114745 is a wasteful number, since it uses less digits than its factorization.

21404131114745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42384418155.

The product of its (nonzero) digits is 53760, while the sum is 38.

The spelling of 21404131114745 in words is "twenty-one trillion, four hundred four billion, one hundred thirty-one million, one hundred fourteen thousand, seven hundred forty-five".