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80809704948 = 22372137431471
BaseRepresentation
bin100101101000010100…
…0100011110111110100
321201120202201100101010
41023100220203313310
52310444241024243
6101042400232220
75560353105300
oct1132050436764
9251522640333
1080809704948
11312a8a76425
12137b300b670
13780ab0517b
143ca850cd00
15217e611433
hex12d0a23df4

80809704948 has 36 divisors (see below), whose sum is σ = 219340629312. Its totient is φ = 23088486960.

The previous prime is 80809704947. The next prime is 80809704967. The reversal of 80809704948 is 84940790808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80809704947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68715148 + ... + 68716323.

Almost surely, 280809704948 is an apocalyptic number.

It is an amenable number.

80809704948 is an abundant number, since it is smaller than the sum of its proper divisors (138530924364).

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

80809704948 is a wasteful number, since it uses less digits than its factorization.

80809704948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137431492 (or 137431483 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 57.

It can be divided in two parts, 8080 and 9704948, that added together give a triangular number (9713028 = T4407).

The spelling of 80809704948 in words is "eighty billion, eight hundred nine million, seven hundred four thousand, nine hundred forty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 49 84 98 147 196 294 588 137431471 274862942 412294413 549725884 824588826 962020297 1649177652 1924040594 2886060891 3848081188 5772121782 6734142079 11544243564 13468284158 20202426237 26936568316 40404852474 80809704948