75861226369 has 2 divisors, whose sum is σ = 75861226370. Its totient is φ = 75861226368.

The previous prime is 75861226349. The next prime is 75861226379. The reversal of 75861226369 is 96362216857.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39129587344 + 36731639025 = 197812^2 + 191655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75861226369 is a prime.

It is a super-2 number, since 2×75861226369² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75861226349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37930613184 + 37930613185.

It is an arithmetic number, because the mean of its divisors is an integer number (37930613185).

Almost surely, 2^75861226369 is an apocalyptic number.

It is an amenable number.

75861226369 is a deficient number, since it is larger than the sum of its proper divisors (1).

75861226369 is an equidigital number, since it uses as much as digits as its factorization.

75861226369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 55.

The spelling of 75861226369 in words is "seventy-five billion, eight hundred sixty-one million, two hundred twenty-six thousand, three hundred sixty-nine".