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68501286610 = 256850128661
BaseRepresentation
bin111111110010111111…
…101010111011010010
320112210222020220121021
4333302333222323102
52110242312132420
651245152150054
74643345220601
oct776277527322
9215728226537
1068501286610
1127062210569
1211338b3832a
1365c8ab5bb3
14345b969a38
151badc6c7aa
hexff2feaed2

68501286610 has 8 divisors (see below), whose sum is σ = 123302315916. Its totient is φ = 27400514640.

The previous prime is 68501286593. The next prime is 68501286631. The reversal of 68501286610 is 1668210586.

It can be written as a sum of positive squares in 2 ways, for example, as 68106906729 + 394379881 = 260973^2 + 19859^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3425064321 + ... + 3425064340.

Almost surely, 268501286610 is an apocalyptic number.

68501286610 is a deficient number, since it is larger than the sum of its proper divisors (54801029306).

68501286610 is a wasteful number, since it uses less digits than its factorization.

68501286610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6850128668.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 68501286610 in words is "sixty-eight billion, five hundred one million, two hundred eighty-six thousand, six hundred ten".

Divisors: 1 2 5 10 6850128661 13700257322 34250643305 68501286610