69085475377 has 2 divisors, whose sum is σ = 69085475378. Its totient is φ = 69085475376.

The previous prime is 69085475363. The next prime is 69085475387. The reversal of 69085475377 is 77357458096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68778209536 + 307265841 = 262256^2 + 17529^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69085475377 is a prime.

It is a super-3 number, since 3×69085475377³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (69085475317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34542737688 + 34542737689.

It is an arithmetic number, because the mean of its divisors is an integer number (34542737689).

Almost surely, 2^69085475377 is an apocalyptic number.

It is an amenable number.

69085475377 is a deficient number, since it is larger than the sum of its proper divisors (1).

69085475377 is an equidigital number, since it uses as much as digits as its factorization.

69085475377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44452800, while the sum is 61.

The spelling of 69085475377 in words is "sixty-nine billion, eighty-five million, four hundred seventy-five thousand, three hundred seventy-seven".