69408428237 has 2 divisors, whose sum is σ = 69408428238. Its totient is φ = 69408428236.

The previous prime is 69408428203. The next prime is 69408428263. The reversal of 69408428237 is 73282480496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68228574436 + 1179853801 = 261206^2 + 34349^2 .

It is a cyclic number.

It is not a de Polignac number, because 69408428237 - 2²⁶ = 69341319373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69408428437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34704214118 + 34704214119.

It is an arithmetic number, because the mean of its divisors is an integer number (34704214119).

Almost surely, 2^69408428237 is an apocalyptic number.

It is an amenable number.

69408428237 is a deficient number, since it is larger than the sum of its proper divisors (1).

69408428237 is an equidigital number, since it uses as much as digits as its factorization.

69408428237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4644864, while the sum is 53.

The spelling of 69408428237 in words is "sixty-nine billion, four hundred eight million, four hundred twenty-eight thousand, two hundred thirty-seven".