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80908723290143 = 711558389041449
BaseRepresentation
bin10010011001011000000111…
…101101100000000000011111
3101121110210120001001011022102
4102121120013231200000133
541101102031130241033
6444024542050235315
723020314405463550
oct2231300755400037
9347423501034272
1080908723290143
1123864219013a31
1290a879b885b3b
13361b876966668
1415da008722327
1595494cbd3de8
hex499607b6001f

80908723290143 has 4 divisors (see below), whose sum is σ = 92467112331600. Its totient is φ = 69350334248688.

The previous prime is 80908723290047. The next prime is 80908723290173. The reversal of 80908723290143 is 34109232780908.

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-80908723290143 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 (80908723290173) 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, 5779194520718 + ... + 5779194520731.

It is an arithmetic number, because the mean of its divisors is an integer number (23116778082900).

Almost surely, 280908723290143 is an apocalyptic number.

80908723290143 is a deficient number, since it is larger than the sum of its proper divisors (11558389041457).

80908723290143 is a wasteful number, since it uses less digits than its factorization.

80908723290143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11558389041456.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 80908723290143 in words is "eighty trillion, nine hundred eight billion, seven hundred twenty-three million, two hundred ninety thousand, one hundred forty-three".

Divisors: 1 7 11558389041449 80908723290143