66331466036553 has 16 divisors (see below), whose sum is σ = 88900949471616. Its totient is φ = 43991483827200.

The previous prime is 66331466036519. The next prime is 66331466036569. The reversal of 66331466036553 is 35563066413366.

It is not a de Polignac number, because 66331466036553 - 2⁹ = 66331466036041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66331466036493 and 66331466036502.

It is not an unprimeable number, because it can be changed into a prime (66331466036453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80244076 + ... + 81066482.

It is an arithmetic number, because the mean of its divisors is an integer number (5556309341976).

Almost surely, 2^{66331466036553} is an apocalyptic number.

It is an amenable number.

66331466036553 is a deficient number, since it is larger than the sum of its proper divisors (22569483435063).

66331466036553 is a wasteful number, since it uses less digits than its factorization.

66331466036553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961904.

The product of its (nonzero) digits is 62985600, while the sum is 57.

The spelling of 66331466036553 in words is "sixty-six trillion, three hundred thirty-one billion, four hundred sixty-six million, thirty-six thousand, five hundred fifty-three".