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68458132574 = 2137383434561
BaseRepresentation
bin111111110000011011…
…000011010001011110
320112200222001110101122
4333300123003101132
52110200240220244
651241011210542
74642312345226
oct776033032136
9215628043348
1068458132574
112703a916277
12113265a6a52
1365bcb86870
143455d35086
151baa0961ee
hexff06c345e

68458132574 has 32 divisors (see below), whose sum is σ = 113451970464. Its totient is φ = 30787706880.

The previous prime is 68458132573. The next prime is 68458132651. The reversal of 68458132574 is 47523185486.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68458132573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59747 + ... + 374814.

It is an arithmetic number, because the mean of its divisors is an integer number (3545374077).

Almost surely, 268458132574 is an apocalyptic number.

68458132574 is a deficient number, since it is larger than the sum of its proper divisors (44993837890).

68458132574 is a wasteful number, since it uses less digits than its factorization.

68458132574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434732.

The product of its digits is 6451200, while the sum is 53.

The spelling of 68458132574 in words is "sixty-eight billion, four hundred fifty-eight million, one hundred thirty-two thousand, five hundred seventy-four".

Divisors: 1 2 13 26 73 83 146 166 949 1079 1898 2158 6059 12118 78767 157534 434561 869122 5649293 11298586 31722953 36068563 63445906 72137126 412398389 468891319 824796778 937782638 2633005099 5266010198 34229066287 68458132574