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21451430614 = 214477412381
BaseRepresentation
bin10011111110100110…
…101101101011010110
32001100222122120202011
4103332212231223112
5322413031234424
613504334334434
71356405103015
oct237646555326
961328576664
1021451430614
119108856359
1241a805a41a
13203b2c2a13
141076d84a7c
158583be694
hex4fe9adad6

21451430614 has 8 divisors (see below), whose sum is σ = 32199387408. Its totient is φ = 10718301480.

The previous prime is 21451430573. The next prime is 21451430629. The reversal of 21451430614 is 41603415412.

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, 3703297 + ... + 3709084.

It is an arithmetic number, because the mean of its divisors is an integer number (4024923426).

Almost surely, 221451430614 is an apocalyptic number.

21451430614 is a deficient number, since it is larger than the sum of its proper divisors (10747956794).

21451430614 is a wasteful number, since it uses less digits than its factorization.

21451430614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7413830.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 21451430614 in words is "twenty-one billion, four hundred fifty-one million, four hundred thirty thousand, six hundred fourteen".

Divisors: 1 2 1447 2894 7412381 14824762 10725715307 21451430614