66460406535400 has 192 divisors, whose sum is σ = 158207174092800. Its totient is φ = 25957751043840.

The previous prime is 66460406535331. The next prime is 66460406535421. The reversal of 66460406535400 is 453560406466.

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, 803328837 + ... + 803411563.

It is an arithmetic number, because the mean of its divisors is an integer number (823995698400).

Almost surely, 2^{66460406535400} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66460406535400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79103587046400).

66460406535400 is an abundant number, since it is smaller than the sum of its proper divisors (91746767557400).

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

66460406535400 is a wasteful number, since it uses less digits than its factorization.

66460406535400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83336 (or 83327 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 49.

The spelling of 66460406535400 in words is "sixty-six trillion, four hundred sixty billion, four hundred six million, five hundred thirty-five thousand, four hundred".