66737440377740 has 24 divisors (see below), whose sum is σ = 152889408865872. Its totient is φ = 24268160137280.

The previous prime is 66737440377739. The next prime is 66737440377767. The reversal of 66737440377740 is 4777304473766.

It is a happy number.

66737440377740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×66737440377740³ (a number of 42 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151676000639 + ... + 151676001078.

It is an arithmetic number, because the mean of its divisors is an integer number (6370392036078).

Almost surely, 2^{66737440377740} is an apocalyptic number.

It is an amenable number.

66737440377740 is an abundant number, since it is smaller than the sum of its proper divisors (86151968488132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66737440377740 is a wasteful number, since it uses less digits than its factorization.

66737440377740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303352001737 (or 303352001735 counting only the distinct ones).

The product of its (nonzero) digits is 348509952, while the sum is 65.

The spelling of 66737440377740 in words is "sixty-six trillion, seven hundred thirty-seven billion, four hundred forty million, three hundred seventy-seven thousand, seven hundred forty".