Search a number
-
+
68077804100 = 22522354928909
BaseRepresentation
bin111111011001110000…
…001101101001000100
320111201110101202210212
4333121300031221010
52103410404212400
651135143334552
74630013533655
oct773160155104
9214643352725
1068077804100
1126965166919
121123b151458
13655c142027
14341b61152c
151b869bb335
hexfd9c0da44

68077804100 has 36 divisors (see below), whose sum is σ = 147740218500. Its totient is φ = 27229023360.

The previous prime is 68077804073. The next prime is 68077804129. The reversal of 68077804100 is 140877086.

68077804100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1435348996 + 66642455104 = 37886^2 + 258152^2 .

It is a super-2 number, since 2×680778041002 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2340446 + ... + 2369354.

Almost surely, 268077804100 is an apocalyptic number.

It is an amenable number.

68077804100 is an abundant number, since it is smaller than the sum of its proper divisors (79662414400).

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

68077804100 is a wasteful number, since it uses less digits than its factorization.

68077804100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52472 (or 52465 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The spelling of 68077804100 in words is "sixty-eight billion, seventy-seven million, eight hundred four thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 23549 28909 47098 57818 94196 115636 117745 144545 235490 289090 470980 578180 588725 722725 1177450 1445450 2354900 2890900 680778041 1361556082 2723112164 3403890205 6807780410 13615560820 17019451025 34038902050 68077804100