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80831838129995 = 516166367625999
BaseRepresentation
bin10010011000010000100000…
…111111111000111101001011
3101121012110002210001100022102
4102120100200333320331023
541043322101030124440
6443525344522344015
723011623205424651
oct2230204077707513
9347173083040272
1080831838129995
1123834654385167
12909590305b00b
133614542c54364
1415d63d3524dd1
1595294cde0b15
hex498420ff8f4b

80831838129995 has 4 divisors (see below), whose sum is σ = 96998205756000. Its totient is φ = 64665470503992.

The previous prime is 80831838129983. The next prime is 80831838130027. The reversal of 80831838129995 is 59992183813808.

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 80831838129995 - 24 = 80831838129979 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8083183812995 + ... + 8083183813004.

It is an arithmetic number, because the mean of its divisors is an integer number (24249551439000).

Almost surely, 280831838129995 is an apocalyptic number.

80831838129995 is a deficient number, since it is larger than the sum of its proper divisors (16166367626005).

80831838129995 is a wasteful number, since it uses less digits than its factorization.

80831838129995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16166367626004.

The product of its (nonzero) digits is 268738560, while the sum is 74.

The spelling of 80831838129995 in words is "eighty trillion, eight hundred thirty-one billion, eight hundred thirty-eight million, one hundred twenty-nine thousand, nine hundred ninety-five".

Divisors: 1 5 16166367625999 80831838129995