21426661461614 has 16 divisors (see below), whose sum is σ = 34073435492736. Its totient is φ = 10087530242400.

The previous prime is 21426661461607. The next prime is 21426661461617. The reversal of 21426661461614 is 41616416662412.

It is a super-4 number, since 4×21426661461614⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21426661461617) 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, 4670150597 + ... + 4670155184.

It is an arithmetic number, because the mean of its divisors is an integer number (2129589718296).

Almost surely, 2^{21426661461614} is an apocalyptic number.

21426661461614 is a deficient number, since it is larger than the sum of its proper divisors (12646774031122).

21426661461614 is a wasteful number, since it uses less digits than its factorization.

21426661461614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9340305851.

The product of its digits is 1990656, while the sum is 50.

The spelling of 21426661461614 in words is "twenty-one trillion, four hundred twenty-six billion, six hundred sixty-one million, four hundred sixty-one thousand, six hundred fourteen".