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68675373090 = 2325763059701
BaseRepresentation
bin111111111101010111…
…110000100000100010
320120021002211102100200
4333331113300200202
52111121343414330
651314331330030
74650561016422
oct777527604042
9216232742320
1068675373090
1127141504295
12113872b0916
136625b9924c
143476b24482
151bbe1a8a60
hexffd5f0822

68675373090 has 24 divisors (see below), whose sum is σ = 178555970268. Its totient is φ = 18313432800.

The previous prime is 68675373079. The next prime is 68675373103. The reversal of 68675373090 is 9037357686.

It can be written as a sum of positive squares in 2 ways, for example, as 68028637329 + 646735761 = 260823^2 + 25431^2 .

It is a super-2 number, since 2×686753730902 (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, 381529761 + ... + 381529940.

Almost surely, 268675373090 is an apocalyptic number.

68675373090 is an abundant number, since it is smaller than the sum of its proper divisors (109880597178).

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

68675373090 is a wasteful number, since it uses less digits than its factorization.

68675373090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763059714 (or 763059711 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 54.

The spelling of 68675373090 in words is "sixty-eight billion, six hundred seventy-five million, three hundred seventy-three thousand, ninety".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 763059701 1526119402 2289179103 3815298505 4578358206 6867537309 7630597010 11445895515 13735074618 22891791030 34337686545 68675373090