66323454555400 has 48 divisors (see below), whose sum is σ = 176230893536640. Its totient is φ = 22739470132800.

The previous prime is 66323454555377. The next prime is 66323454555497. The reversal of 66323454555400 is 455545432366.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23686946656 + ... + 23686949455.

It is an arithmetic number, because the mean of its divisors is an integer number (3671476948680).

Almost surely, 2^{66323454555400} is an apocalyptic number.

It is an amenable number.

66323454555400 is an abundant number, since it is smaller than the sum of its proper divisors (109907438981240).

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

66323454555400 is a wasteful number, since it uses less digits than its factorization.

66323454555400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47373896134 (or 47373896125 counting only the distinct ones).

The product of its (nonzero) digits is 25920000, while the sum is 52.

Adding to 66323454555400 its reverse (455545432366), we get a palindrome (66778999987766).

The spelling of 66323454555400 in words is "sixty-six trillion, three hundred twenty-three billion, four hundred fifty-four million, five hundred fifty-five thousand, four hundred".