21450545614 has 16 divisors (see below), whose sum is σ = 34355578752. Its totient is φ = 10020375288.

The previous prime is 21450545609. The next prime is 21450545639. The reversal of 21450545614 is 41654505412.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

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, 5420304 + ... + 5424259.

It is an arithmetic number, because the mean of its divisors is an integer number (2147223672).

Almost surely, 2^21450545614 is an apocalyptic number.

21450545614 is a deficient number, since it is larger than the sum of its proper divisors (12905033138).

21450545614 is a wasteful number, since it uses less digits than its factorization.

21450545614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10844631.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 21450545614 in words is "twenty-one billion, four hundred fifty million, five hundred forty-five thousand, six hundred fourteen".