69577975381 has 2 divisors, whose sum is σ = 69577975382. Its totient is φ = 69577975380.

The previous prime is 69577975351. The next prime is 69577975387. The reversal of 69577975381 is 18357977596.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69068570481 + 509404900 = 262809^2 + 22570^2 .

It is a cyclic number.

It is not a de Polignac number, because 69577975381 - 2²³ = 69569586773 is a prime.

It is a super-2 number, since 2×69577975381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69577975387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34788987690 + 34788987691.

It is an arithmetic number, because the mean of its divisors is an integer number (34788987691).

Almost surely, 2^69577975381 is an apocalyptic number.

It is an amenable number.

69577975381 is a deficient number, since it is larger than the sum of its proper divisors (1).

69577975381 is an equidigital number, since it uses as much as digits as its factorization.

69577975381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100018800, while the sum is 67.

The spelling of 69577975381 in words is "sixty-nine billion, five hundred seventy-seven million, nine hundred seventy-five thousand, three hundred eighty-one".