66077136455 has 16 divisors (see below), whose sum is σ = 86506831008. Its totient is φ = 48052848000.

The previous prime is 66077136427. The next prime is 66077136457. The reversal of 66077136455 is 55463177066.

It is not a de Polignac number, because 66077136455 - 2¹⁰ = 66077135431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66077136457) 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, 1037225 + ... + 1099085.

It is an arithmetic number, because the mean of its divisors is an integer number (5406676938).

Almost surely, 2^66077136455 is an apocalyptic number.

66077136455 is a deficient number, since it is larger than the sum of its proper divisors (20429694553).

66077136455 is a wasteful number, since it uses less digits than its factorization.

66077136455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81298.

The product of its (nonzero) digits is 3175200, while the sum is 50.

The spelling of 66077136455 in words is "sixty-six billion, seventy-seven million, one hundred thirty-six thousand, four hundred fifty-five".