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68770018900 = 22521162518199
BaseRepresentation
bin100000000001100000…
…0110011011001010100
320120111200220221000001
41000003000303121110
52111320111101100
651331552101044
74653120341632
oct1000300633124
9216450827001
1068770018900
112718a979070
12113b2b34784
13663c68699b
143485520352
151bc7651d6a
hex1003033654

68770018900 has 36 divisors (see below), whose sum is σ = 162797392800. Its totient is φ = 25007279200.

The previous prime is 68770018879. The next prime is 68770018903. The reversal of 68770018900 is 981007786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68770018903) 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, 31258000 + ... + 31260199.

It is an arithmetic number, because the mean of its divisors is an integer number (4522149800).

Almost surely, 268770018900 is an apocalyptic number.

It is an amenable number.

68770018900 is an abundant number, since it is smaller than the sum of its proper divisors (94027373900).

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

68770018900 is a wasteful number, since it uses less digits than its factorization.

68770018900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62518224 (or 62518217 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 46.

The spelling of 68770018900 in words is "sixty-eight billion, seven hundred seventy million, eighteen thousand, nine hundred".

Divisors: 1 2 4 5 10 11 20 22 25 44 50 55 100 110 220 275 550 1100 62518199 125036398 250072796 312590995 625181990 687700189 1250363980 1375400378 1562954975 2750800756 3125909950 3438500945 6251819900 6877001890 13754003780 17192504725 34385009450 68770018900