126395201965 has 8 divisors (see below), whose sum is σ = 151715513880. Its totient is φ = 101088647232.

The previous prime is 126395201957. The next prime is 126395201971. The reversal of 126395201965 is 569102593621.

It can be written as a sum of positive squares in 4 ways, for example, as 74121696009 + 52273505956 = 272253^2 + 228634^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126395201965 - 2³ = 126395201957 is a prime.

It is a super-3 number, since 3×126395201965³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3419070 + ... + 3455839.

It is an arithmetic number, because the mean of its divisors is an integer number (18964439235).

Almost surely, 2^126395201965 is an apocalyptic number.

It is an amenable number.

126395201965 is a deficient number, since it is larger than the sum of its proper divisors (25320311915).

126395201965 is an equidigital number, since it uses as much as digits as its factorization.

126395201965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6878591.

The product of its (nonzero) digits is 874800, while the sum is 49.

The spelling of 126395201965 in words is "one hundred twenty-six billion, three hundred ninety-five million, two hundred one thousand, nine hundred sixty-five".