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80972227908 = 2233111341127877
BaseRepresentation
bin100101101101001010…
…0100010010101000100
321202000002112100222000
41023122110202111010
52311312342243113
6101110443505300
75564365403205
oct1133224422504
9252002470860
1080972227908
1131381791320
1213839528230
13783569a0c0
143cc1d375ac
15218da16373
hex12da522544

80972227908 has 192 divisors, whose sum is σ = 252646007040. Its totient is φ = 22096972800.

The previous prime is 80972227907. The next prime is 80972227991.

80972227908 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (80972227901) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 569266 + ... + 697142.

It is an arithmetic number, because the mean of its divisors is an integer number (1315864620).

Almost surely, 280972227908 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80972227908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126323003520).

80972227908 is an abundant number, since it is smaller than the sum of its proper divisors (171673779132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80972227908 is a wasteful number, since it uses less digits than its factorization.

80972227908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127955 (or 127947 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 80972227908 in words is "eighty billion, nine hundred seventy-two million, two hundred twenty-seven thousand, nine hundred eight".