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68719476767 is a prime number
BaseRepresentation
bin100000000000000000…
…0000000000000011111
320120101011211010020012
41000000000000000133
52111214141224032
651322544513435
74651634625524
oct1000000000037
9216334733205
1068719476767
1127164398007
121139a01b87b
13663206b8b6
14347c92514b
151bc2ebb6b2
hex100000001f

68719476767 has 2 divisors, whose sum is σ = 68719476768. Its totient is φ = 68719476766.

The previous prime is 68719476731. The next prime is 68719476851. The reversal of 68719476767 is 76767491786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68719476767 - 224 = 68702699551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68719476697 and 68719476706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68719475767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34359738383 + 34359738384.

It is an arithmetic number, because the mean of its divisors is an integer number (34359738384).

Almost surely, 268719476767 is an apocalyptic number.

68719476767 is a deficient number, since it is larger than the sum of its proper divisors (1).

68719476767 is an equidigital number, since it uses as much as digits as its factorization.

68719476767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 149361408, while the sum is 68.

The spelling of 68719476767 in words is "sixty-eight billion, seven hundred nineteen million, four hundred seventy-six thousand, seven hundred sixty-seven".