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807245855540 = 225286114107757
BaseRepresentation
bin10111011111100111001…
…10100011101100110100
32212011122100111100011122
423233303212203230310
5101211214414334130
61414502120123112
7112215206362205
oct13576346435464
92764570440148
10807245855540
11291395271263
12110549006498
135b17a1a3767
142b0dc7dd5ac
1515ee94c22e5
hexbbf39a3b34

807245855540 has 24 divisors (see below), whose sum is σ = 1695808942632. Its totient is φ = 322785457280.

The previous prime is 807245855519. The next prime is 807245855543. The reversal of 807245855540 is 45558542708.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 242887322896 + 564358532644 = 492836^2 + 751238^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (807245855543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6996659 + ... + 7111098.

It is an arithmetic number, because the mean of its divisors is an integer number (70658705943).

Almost surely, 2807245855540 is an apocalyptic number.

It is an amenable number.

807245855540 is an abundant number, since it is smaller than the sum of its proper divisors (888563087092).

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

807245855540 is a wasteful number, since it uses less digits than its factorization.

807245855540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14110627 (or 14110625 counting only the distinct ones).

The product of its (nonzero) digits is 8960000, while the sum is 53.

The spelling of 807245855540 in words is "eight hundred seven billion, two hundred forty-five million, eight hundred fifty-five thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 2861 5722 11444 14305 28610 57220 14107757 28215514 56431028 70538785 141077570 282155140 40362292777 80724585554 161449171108 201811463885 403622927770 807245855540