66074767503 has 16 divisors (see below), whose sum is σ = 91138093056. Its totient is φ = 42536783520.

The previous prime is 66074767463. The next prime is 66074767523. The reversal of 66074767503 is 30576747066.

It is not a de Polignac number, because 66074767503 - 2⁶ = 66074767439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66074767523) 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, 724200 + ... + 810317.

It is an arithmetic number, because the mean of its divisors is an integer number (5696130816).

Almost surely, 2^66074767503 is an apocalyptic number.

66074767503 is a deficient number, since it is larger than the sum of its proper divisors (25063325553).

66074767503 is a wasteful number, since it uses less digits than its factorization.

66074767503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535014.

The product of its (nonzero) digits is 4445280, while the sum is 51.

The spelling of 66074767503 in words is "sixty-six billion, seventy-four million, seven hundred sixty-seven thousand, five hundred three".