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68762625007 = 531297408019
BaseRepresentation
bin100000000001010010…
…0100110001111101111
320120111012000021111011
41000002210212033233
52111311213000012
651331125410051
74653000445246
oct1000244461757
9216435007434
1068762625007
1127186788a0a
12113b0569927
13663ac983bb
14348455795d
151bc6b911a7
hex10029263ef

68762625007 has 4 divisors (see below), whose sum is σ = 70060033080. Its totient is φ = 67465216936.

The previous prime is 68762624999. The next prime is 68762625017. The reversal of 68762625007 is 70052626786.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68762625007 - 23 = 68762624999 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68762625017) 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, 648703957 + ... + 648704062.

It is an arithmetic number, because the mean of its divisors is an integer number (17515008270).

Almost surely, 268762625007 is an apocalyptic number.

68762625007 is a deficient number, since it is larger than the sum of its proper divisors (1297408073).

68762625007 is a wasteful number, since it uses less digits than its factorization.

68762625007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297408072.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 68762625007 in words is "sixty-eight billion, seven hundred sixty-two million, six hundred twenty-five thousand, seven".

Divisors: 1 53 1297408019 68762625007