66407733135 has 48 divisors (see below), whose sum is σ = 121803222528. Its totient is φ = 33400382400.

The previous prime is 66407733127. The next prime is 66407733149. The reversal of 66407733135 is 53133770466.

It is a happy number.

It is not a de Polignac number, because 66407733135 - 2³ = 66407733127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 378361 + ... + 525330.

It is an arithmetic number, because the mean of its divisors is an integer number (2537567136).

Almost surely, 2^66407733135 is an apocalyptic number.

66407733135 is a deficient number, since it is larger than the sum of its proper divisors (55395489393).

66407733135 is a wasteful number, since it uses less digits than its factorization.

66407733135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903796 (or 903793 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 45.

The spelling of 66407733135 in words is "sixty-six billion, four hundred seven million, seven hundred thirty-three thousand, one hundred thirty-five".