21616026013454 has 8 divisors (see below), whose sum is σ = 32425504314960. Its totient is φ = 10807524575136.

The previous prime is 21616026013453. The next prime is 21616026013493. The reversal of 21616026013454 is 45431062061612.

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

It is a super-2 number, since 2×21616026013454² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21616026013451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244160474 + ... + 244248989.

It is an arithmetic number, because the mean of its divisors is an integer number (4053188039370).

Almost surely, 2^{21616026013454} is an apocalyptic number.

21616026013454 is a deficient number, since it is larger than the sum of its proper divisors (10809478301506).

21616026013454 is a wasteful number, since it uses less digits than its factorization.

21616026013454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488431594.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 21616026013454 in words is "twenty-one trillion, six hundred sixteen billion, twenty-six million, thirteen thousand, four hundred fifty-four".