66325964454 has 32 divisors (see below), whose sum is σ = 147408768000. Its totient is φ = 22105994472.

The previous prime is 66325964447. The next prime is 66325964479. The reversal of 66325964454 is 45446952366.

66325964454 is a `hidden beast` number, since 6 + 6 + 3 + 2 + 596 + 4 + 45 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66325964454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407827 + ... + 546785.

It is an arithmetic number, because the mean of its divisors is an integer number (4606524000).

Almost surely, 2^66325964454 is an apocalyptic number.

66325964454 is an abundant number, since it is smaller than the sum of its proper divisors (81082803546).

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

66325964454 is a wasteful number, since it uses less digits than its factorization.

66325964454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147809 (or 147803 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 54.

The spelling of 66325964454 in words is "sixty-six billion, three hundred twenty-five million, nine hundred sixty-four thousand, four hundred fifty-four".