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20123203099 = 174911150489
BaseRepresentation
bin10010101111011011…
…111011011000011011
31220221102100122010111
4102233123323120123
5312203014444344
613124450025151
71311446255416
oct225733733033
956842318114
1020123203099
11859702936a
123a972781b7
131b8908378c
14d8c7d6b7d
157cb9a5834
hex4af6fb61b

20123203099 has 4 divisors (see below), whose sum is σ = 20124371080. Its totient is φ = 20122035120.

The previous prime is 20123203097. The next prime is 20123203103. The reversal of 20123203099 is 99030232102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20123203099 - 21 = 20123203097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20123203099.

It is not an unprimeable number, because it can be changed into a prime (20123203097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557754 + ... + 592735.

It is an arithmetic number, because the mean of its divisors is an integer number (5031092770).

Almost surely, 220123203099 is an apocalyptic number.

20123203099 is a deficient number, since it is larger than the sum of its proper divisors (1167981).

20123203099 is a wasteful number, since it uses less digits than its factorization.

20123203099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167980.

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 20123203099 in words is "twenty billion, one hundred twenty-three million, two hundred three thousand, ninety-nine".

Divisors: 1 17491 1150489 20123203099