126343640077 has 8 divisors (see below), whose sum is σ = 130249563192. Its totient is φ = 122476972800.

The previous prime is 126343640069. The next prime is 126343640107. The reversal of 126343640077 is 770046343621.

It can be written as a sum of positive squares in 4 ways, for example, as 129709321 + 126213930756 = 11389^2 + 355266^2 .

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 126343640077 - 2³ = 126343640069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126343649077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9807424 + ... + 9820297.

It is an arithmetic number, because the mean of its divisors is an integer number (16281195399).

Almost surely, 2^126343640077 is an apocalyptic number.

It is an amenable number.

126343640077 is a deficient number, since it is larger than the sum of its proper divisors (3905923115).

126343640077 is a wasteful number, since it uses less digits than its factorization.

126343640077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19627919.

The product of its (nonzero) digits is 508032, while the sum is 43.

Adding to 126343640077 its reverse (770046343621), we get a palindrome (896389983698).

The spelling of 126343640077 in words is "one hundred twenty-six billion, three hundred forty-three million, six hundred forty thousand, seventy-seven".