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68880297610 = 256888029761
BaseRepresentation
bin100000000100110010…
…1011110111010001010
320120210101102122221201
41000021211132322022
52112031324010420
651350531454414
74655626604125
oct1001145367212
9216711378851
1068880297610
11272371500a3
1211423a5740a
136659488b67
1434960293bc
151bd218710a
hex100995ee8a

68880297610 has 8 divisors (see below), whose sum is σ = 123984535716. Its totient is φ = 27552119040.

The previous prime is 68880297601. The next prime is 68880297613. The reversal of 68880297610 is 1679208886.

It can be written as a sum of positive squares in 2 ways, for example, as 63348359481 + 5531938129 = 251691^2 + 74377^2 .

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

It is not an unprimeable number, because it can be changed into a prime (68880297613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3444014871 + ... + 3444014890.

Almost surely, 268880297610 is an apocalyptic number.

68880297610 is a deficient number, since it is larger than the sum of its proper divisors (55104238106).

68880297610 is a wasteful number, since it uses less digits than its factorization.

68880297610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6888029768.

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 68880297610 in words is "sixty-eight billion, eight hundred eighty million, two hundred ninety-seven thousand, six hundred ten".

Divisors: 1 2 5 10 6888029761 13776059522 34440148805 68880297610