66354354869530 has 128 divisors (see below), whose sum is σ = 147281693368320. Its totient is φ = 20959897754880.

The previous prime is 66354354869519. The next prime is 66354354869533. The reversal of 66354354869530 is 3596845345366.

It is not an unprimeable number, because it can be changed into a prime (66354354869533) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2121897795 + ... + 2121929065.

It is an arithmetic number, because the mean of its divisors is an integer number (1150638229440).

Almost surely, 2^{66354354869530} is an apocalyptic number.

66354354869530 is an abundant number, since it is smaller than the sum of its proper divisors (80927338498790).

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

66354354869530 is a wasteful number, since it uses less digits than its factorization.

66354354869530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35684.

The product of its (nonzero) digits is 839808000, while the sum is 67.

The spelling of 66354354869530 in words is "sixty-six trillion, three hundred fifty-four billion, three hundred fifty-four million, eight hundred sixty-nine thousand, five hundred thirty".