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80431690053 = 31113199942143
BaseRepresentation
bin100101011101000011…
…0100011000101000101
321200121102102012102110
41022322012203011011
52304211003040203
6100541054131233
75545113041121
oct1127206430505
9250542365373
1080431690053
1131124657220
12137084b0b19
13777a6c0710
143c7022c581
15215b341d03
hex12ba1a3145

80431690053 has 32 divisors (see below), whose sum is σ = 126624153600. Its totient is φ = 44770587840.

The previous prime is 80431689953. The next prime is 80431690063. The reversal of 80431690053 is 35009613408.

It is not a de Polignac number, because 80431690053 - 28 = 80431689797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 80431689993 and 80431690020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80431690063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 385701 + ... + 556442.

It is an arithmetic number, because the mean of its divisors is an integer number (3957004800).

Almost surely, 280431690053 is an apocalyptic number.

It is an amenable number.

80431690053 is a deficient number, since it is larger than the sum of its proper divisors (46192463547).

80431690053 is a wasteful number, since it uses less digits than its factorization.

80431690053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942369.

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 80431690053 in words is "eighty billion, four hundred thirty-one million, six hundred ninety thousand, fifty-three".

Divisors: 1 3 11 13 33 39 143 199 429 597 2189 2587 6567 7761 28457 85371 942143 2826429 10363573 12247859 31090719 36743577 134726449 187486457 404179347 562459371 2062351027 2437323941 6187053081 7311971823 26810563351 80431690053