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80896836831 = 3731087339827
BaseRepresentation
bin100101101010111010…
…0111100010011011111
321201210211200002211220
41023111310330103133
52311134042234311
6101055151544423
75562461524146
oct1132564742337
9251724602756
1080896836831
1131343178948
121381822b113
137822b917b5
143cb5d1075d
1521870c3206
hex12d5d3c4df

80896836831 has 16 divisors (see below), whose sum is σ = 109440927744. Its totient is φ = 53143349184.

The previous prime is 80896836829. The next prime is 80896836851. The reversal of 80896836831 is 13863869808.

It is not a de Polignac number, because 80896836831 - 21 = 80896836829 is a prime.

It is a super-2 number, since 2×808968368312 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80896836851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68140 + ... + 407966.

It is an arithmetic number, because the mean of its divisors is an integer number (6840057984).

Almost surely, 280896836831 is an apocalyptic number.

80896836831 is a deficient number, since it is larger than the sum of its proper divisors (28544090913).

80896836831 is a wasteful number, since it uses less digits than its factorization.

80896836831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340990.

The product of its (nonzero) digits is 11943936, while the sum is 60.

The spelling of 80896836831 in words is "eighty billion, eight hundred ninety-six million, eight hundred thirty-six thousand, eight hundred thirty-one".

Divisors: 1 3 73 219 1087 3261 79351 238053 339827 1019481 24807371 74422113 369391949 1108175847 26965612277 80896836831