66435031446 has 16 divisors (see below), whose sum is σ = 151851500544. Its totient is φ = 18981437544.

The previous prime is 66435031417. The next prime is 66435031463. The reversal of 66435031446 is 64413053466.

It is a super-2 number, since 2×66435031446² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1581786463 = 66435031446 / (6 + 6 + 4 + 3 + 5 + 0 + 3 + 1 + 4 + 4 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 66435031398 and 66435031407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790893190 + ... + 790893273.

It is an arithmetic number, because the mean of its divisors is an integer number (9490718784).

Almost surely, 2^66435031446 is an apocalyptic number.

66435031446 is an abundant number, since it is smaller than the sum of its proper divisors (85416469098).

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

66435031446 is a wasteful number, since it uses less digits than its factorization.

66435031446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581786475.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 66435031446 in words is "sixty-six billion, four hundred thirty-five million, thirty-one thousand, four hundred forty-six".