66225381508 has 48 divisors (see below), whose sum is σ = 136182239424. Its totient is φ = 27781453440.

The previous prime is 66225381503. The next prime is 66225381527. The reversal of 66225381508 is 80518352266.

It is not an unprimeable number, because it can be changed into a prime (66225381503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4492566 + ... + 4507282.

It is an arithmetic number, because the mean of its divisors is an integer number (2837129988).

Almost surely, 2^66225381508 is an apocalyptic number.

It is an amenable number.

66225381508 is an abundant number, since it is smaller than the sum of its proper divisors (69956857916).

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

66225381508 is a wasteful number, since it uses less digits than its factorization.

66225381508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22612 (or 22610 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 66225381508 in words is "sixty-six billion, two hundred twenty-five million, three hundred eighty-one thousand, five hundred eight".