66734037331 has 16 divisors (see below), whose sum is σ = 72164736000. Its totient is φ = 61346188800.

The previous prime is 66734037301. The next prime is 66734037341. The reversal of 66734037331 is 13373043766.

66734037331 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 66734037331 - 2⁵ = 66734037299 is a prime.

It is a super-2 number, since 2×66734037331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66734037301) 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, 4676295 + ... + 4690543.

It is an arithmetic number, because the mean of its divisors is an integer number (4510296000).

Almost surely, 2^66734037331 is an apocalyptic number.

66734037331 is a deficient number, since it is larger than the sum of its proper divisors (5430698669).

66734037331 is a wasteful number, since it uses less digits than its factorization.

66734037331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15726.

The product of its (nonzero) digits is 571536, while the sum is 43.

The spelling of 66734037331 in words is "sixty-six billion, seven hundred thirty-four million, thirty-seven thousand, three hundred thirty-one".