66455212024 has 32 divisors (see below), whose sum is σ = 125200224000. Its totient is φ = 33068861280.

The previous prime is 66455212001. The next prime is 66455212129. The reversal of 66455212024 is 42021255466.

It is a happy number.

It is a super-3 number, since 3×66455212024³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1418527 + ... + 1464625.

It is an arithmetic number, because the mean of its divisors is an integer number (3912507000).

Almost surely, 2^66455212024 is an apocalyptic number.

It is an amenable number.

66455212024 is a deficient number, since it is larger than the sum of its proper divisors (58745011976).

66455212024 is a wasteful number, since it uses less digits than its factorization.

66455212024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46963 (or 46959 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 66455212024 in words is "sixty-six billion, four hundred fifty-five million, two hundred twelve thousand, twenty-four".