66741258057 has 16 divisors (see below), whose sum is σ = 90220885248. Its totient is φ = 43878084480.

The previous prime is 66741258047. The next prime is 66741258061. The reversal of 66741258057 is 75085214766.

66741258057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66741258057 - 2¹⁵ = 66741225289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66741258047) 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, 1757523 + ... + 1795095.

It is an arithmetic number, because the mean of its divisors is an integer number (5638805328).

Almost surely, 2^66741258057 is an apocalyptic number.

It is an amenable number.

66741258057 is a deficient number, since it is larger than the sum of its proper divisors (23479627191).

66741258057 is a wasteful number, since it uses less digits than its factorization.

66741258057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45760.

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 66741258057 in words is "sixty-six billion, seven hundred forty-one million, two hundred fifty-eight thousand, fifty-seven".