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23492471279 = 181129792659
BaseRepresentation
bin10101111000010000…
…101010100111101111
32020122020020012011212
4111320100222213233
5341103033040104
614443045105035
71461110465624
oct257020524757
966566205155
1023492471279
119a65984422
1246776b817b
1322a51094a4
1411cc08434b
1592768c36e
hex57842a9ef

23492471279 has 4 divisors (see below), whose sum is σ = 23622264120. Its totient is φ = 23362678440.

The previous prime is 23492471269. The next prime is 23492471287. The reversal of 23492471279 is 97217429432.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23492471279 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 (23492471269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64896149 + ... + 64896510.

It is an arithmetic number, because the mean of its divisors is an integer number (5905566030).

Almost surely, 223492471279 is an apocalyptic number.

23492471279 is a deficient number, since it is larger than the sum of its proper divisors (129792841).

23492471279 is a wasteful number, since it uses less digits than its factorization.

23492471279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129792840.

The product of its digits is 1524096, while the sum is 50.

The spelling of 23492471279 in words is "twenty-three billion, four hundred ninety-two million, four hundred seventy-one thousand, two hundred seventy-nine".

Divisors: 1 181 129792659 23492471279