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69068612797 = 157393438829
BaseRepresentation
bin100000001010011001…
…1110110010010111101
320121021111210001211021
41000110303312102331
52112423031102142
651421340024141
74663404344032
oct1002463662275
9217244701737
1069068612797
1127323482088
1211476b32051
1366894b1772
1434b3049389
151be3984267
hex1014cf64bd

69068612797 has 4 divisors (see below), whose sum is σ = 69069209020. Its totient is φ = 69068016576.

The previous prime is 69068612771. The next prime is 69068612807. The reversal of 69068612797 is 79721686096.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 25071872281 + 43996740516 = 158341^2 + 209754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-69068612797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69068612747) 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, 62022 + ... + 376807.

It is an arithmetic number, because the mean of its divisors is an integer number (17267302255).

Almost surely, 269068612797 is an apocalyptic number.

It is an amenable number.

69068612797 is a deficient number, since it is larger than the sum of its proper divisors (596223).

69068612797 is a wasteful number, since it uses less digits than its factorization.

69068612797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596222.

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 69068612797 in words is "sixty-nine billion, sixty-eight million, six hundred twelve thousand, seven hundred ninety-seven".

Divisors: 1 157393 438829 69068612797