66126987453 has 24 divisors (see below), whose sum is σ = 92205450400. Its totient is φ = 42151459680.

The previous prime is 66126987331. The next prime is 66126987467. The reversal of 66126987453 is 35478962166.

It is not a de Polignac number, because 66126987453 - 2⁸ = 66126987197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66126987393 and 66126987402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66126980453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5041698 + ... + 5054796.

Almost surely, 2^66126987453 is an apocalyptic number.

It is an amenable number.

66126987453 is a deficient number, since it is larger than the sum of its proper divisors (26078462947).

66126987453 is a wasteful number, since it uses less digits than its factorization.

66126987453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16329 (or 16306 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 57.

The spelling of 66126987453 in words is "sixty-six billion, one hundred twenty-six million, nine hundred eighty-seven thousand, four hundred fifty-three".