66320342110440 has 192 divisors, whose sum is σ = 235145928700800. Its totient is φ = 16076963289600.

The previous prime is 66320342110411. The next prime is 66320342110501. The reversal of 66320342110440 is 4401124302366.

66320342110440 is a `hidden beast` number, since 6 + 6 + 3 + 203 + 4 + 2 + 1 + 1 + 0 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 66320342110395 and 66320342110404.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94329405 + ... + 95029875.

It is an arithmetic number, because the mean of its divisors is an integer number (1224718378650).

Almost surely, 2^{66320342110440} is an apocalyptic number.

66320342110440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66320342110440 is an abundant number, since it is smaller than the sum of its proper divisors (168825586590360).

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

66320342110440 is a wasteful number, since it uses less digits than its factorization.

66320342110440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724408 (or 724401 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 66320342110440 in words is "sixty-six trillion, three hundred twenty billion, three hundred forty-two million, one hundred ten thousand, four hundred forty".