126037661653 has 2 divisors, whose sum is σ = 126037661654. Its totient is φ = 126037661652.

The previous prime is 126037661639. The next prime is 126037661677. The reversal of 126037661653 is 356166730621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120907807524 + 5129854129 = 347718^2 + 71623^2 .

It is a cyclic number.

It is not a de Polignac number, because 126037661653 - 2⁵ = 126037661621 is a prime.

It is a super-2 number, since 2×126037661653² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126037691653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63018830826 + 63018830827.

It is an arithmetic number, because the mean of its divisors is an integer number (63018830827).

Almost surely, 2^126037661653 is an apocalyptic number.

It is an amenable number.

126037661653 is a deficient number, since it is larger than the sum of its proper divisors (1).

126037661653 is an equidigital number, since it uses as much as digits as its factorization.

126037661653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 46.

The spelling of 126037661653 in words is "one hundred twenty-six billion, thirty-seven million, six hundred sixty-one thousand, six hundred fifty-three".