21214040442454 has 8 divisors (see below), whose sum is σ = 31827291550488. Its totient is φ = 10604943258960.

The previous prime is 21214040442443. The next prime is 21214040442523. The reversal of 21214040442454 is 45424404041212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1038468367 + ... + 1038488794.

It is an arithmetic number, because the mean of its divisors is an integer number (3978411443811).

Almost surely, 2^{21214040442454} is an apocalyptic number.

21214040442454 is a deficient number, since it is larger than the sum of its proper divisors (10613251108034).

21214040442454 is a wasteful number, since it uses less digits than its factorization.

21214040442454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2076962270.

The product of its (nonzero) digits is 163840, while the sum is 37.

Adding to 21214040442454 its reverse (45424404041212), we get a palindrome (66638444483666).

The spelling of 21214040442454 in words is "twenty-one trillion, two hundred fourteen billion, forty million, four hundred forty-two thousand, four hundred fifty-four".