126656028637 has 2 divisors, whose sum is σ = 126656028638. Its totient is φ = 126656028636.

The previous prime is 126656028599. The next prime is 126656028703. The reversal of 126656028637 is 736820656621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108281141721 + 18374886916 = 329061^2 + 135554^2 .

It is a cyclic number.

It is not a de Polignac number, because 126656028637 - 2³¹ = 124508544989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126656008637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63328014318 + 63328014319.

It is an arithmetic number, because the mean of its divisors is an integer number (63328014319).

Almost surely, 2^126656028637 is an apocalyptic number.

It is an amenable number.

126656028637 is a deficient number, since it is larger than the sum of its proper divisors (1).

126656028637 is an equidigital number, since it uses as much as digits as its factorization.

126656028637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 126656028637 in words is "one hundred twenty-six billion, six hundred fifty-six million, twenty-eight thousand, six hundred thirty-seven".