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67708793090 = 25101221330293
BaseRepresentation
bin111111000011110000…
…100011000100000010
320110202202001001212102
4333003300203010002
52102131422334330
651034402230402
74614613150061
oct770360430402
9213682031772
1067708793090
1126795937444
1211157655402
136500860913
1433c45d61d8
151b643c9945
hexfc3c23102

67708793090 has 32 divisors (see below), whose sum is σ = 123142201776. Its totient is φ = 26802361600.

The previous prime is 67708793059. The next prime is 67708793143. The reversal of 67708793090 is 9039780776.

It can be written as a sum of positive squares in 8 ways, for example, as 63458144281 + 4250648809 = 251909^2 + 65197^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2219984 + ... + 2250276.

Almost surely, 267708793090 is an apocalyptic number.

67708793090 is a deficient number, since it is larger than the sum of its proper divisors (55433408686).

67708793090 is a wasteful number, since it uses less digits than its factorization.

67708793090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32614.

The product of its (nonzero) digits is 4000752, while the sum is 56.

The spelling of 67708793090 in words is "sixty-seven billion, seven hundred eight million, seven hundred ninety-three thousand, ninety".

Divisors: 1 2 5 10 101 202 505 1010 2213 4426 11065 22130 30293 60586 151465 223513 302930 447026 1117565 2235130 3059593 6119186 15297965 30595930 67038409 134076818 335192045 670384090 6770879309 13541758618 33854396545 67708793090