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68474877935 = 530766792
BaseRepresentation
bin111111110001011010…
…111011011111101111
320112202010120012201012
4333301122323133233
52110214032043220
651242410135435
74642604600432
oct776132733757
9215663505635
1068474877935
1127049313312
121133012157b
1365c349a769
143458253819
151bab7a2ac5
hexff16bb7ef

68474877935 has 12 divisors (see below), whose sum is σ = 82449852408. Its totient is φ = 54593291088.

The previous prime is 68474877871. The next prime is 68474877973. The reversal of 68474877935 is 53977847486.

It is not a de Polignac number, because 68474877935 - 26 = 68474877871 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 10248926 + ... + 10255604.

It is an arithmetic number, because the mean of its divisors is an integer number (6870821034).

Almost surely, 268474877935 is an apocalyptic number.

68474877935 is a deficient number, since it is larger than the sum of its proper divisors (13974974473).

68474877935 is an frugal number, since it uses more digits than its factorization.

68474877935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13670 (or 6991 counting only the distinct ones).

The product of its digits is 284497920, while the sum is 68.

The spelling of 68474877935 in words is "sixty-eight billion, four hundred seventy-four million, eight hundred seventy-seven thousand, nine hundred thirty-five".

Divisors: 1 5 307 1535 6679 33395 2050453 10252265 44609041 223045205 13694975587 68474877935