Search a number
-
+
21019017103 = 722713227827
BaseRepresentation
bin10011100100110101…
…001011111110001111
32000020211222200220221
4103210311023332033
5321021332021403
613353410252211
71342604461150
oct234465137617
960224880827
1021019017103
118a06761717
1240a7287067
131c9c842a36
141035783927
15830456dbd
hex4e4d4bf8f

21019017103 has 8 divisors (see below), whose sum is σ = 24127558272. Its totient is φ = 17936932056.

The previous prime is 21019017101. The next prime is 21019017109. The reversal of 21019017103 is 30171091012.

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

It is a cyclic number.

It is not a de Polignac number, because 21019017103 - 21 = 21019017101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21019017101) 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, 6612325 + ... + 6615502.

It is an arithmetic number, because the mean of its divisors is an integer number (3015944784).

Almost surely, 221019017103 is an apocalyptic number.

21019017103 is a deficient number, since it is larger than the sum of its proper divisors (3108541169).

21019017103 is a wasteful number, since it uses less digits than its factorization.

21019017103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13228061.

The product of its (nonzero) digits is 378, while the sum is 25.

The spelling of 21019017103 in words is "twenty-one billion, nineteen million, seventeen thousand, one hundred three".

Divisors: 1 7 227 1589 13227827 92594789 3002716729 21019017103