1236426231077 has 2 divisors, whose sum is σ = 1236426231078. Its totient is φ = 1236426231076.

The previous prime is 1236426231041. The next prime is 1236426231119. The reversal of 1236426231077 is 7701326246321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1231924626241 + 4501604836 = 1109921^2 + 67094^2 .

It is a cyclic number.

It is not a de Polignac number, because 1236426231077 - 2⁶ = 1236426231013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1236426230077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 618213115538 + 618213115539.

It is an arithmetic number, because the mean of its divisors is an integer number (618213115539).

Almost surely, 2^{1236426231077} is an apocalyptic number.

It is an amenable number.

1236426231077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1236426231077 is an equidigital number, since it uses as much as digits as its factorization.

1236426231077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 44.

The spelling of 1236426231077 in words is "one trillion, two hundred thirty-six billion, four hundred twenty-six million, two hundred thirty-one thousand, seventy-seven".