66462226440 has 64 divisors (see below), whose sum is σ = 200908762560. Its totient is φ = 17587964160.

The previous prime is 66462226429. The next prime is 66462226559. The reversal of 66462226440 is 4462226466.

It is a junction number, because it is equal to n+sod(n) for n = 66462226392 and 66462226401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2098219 + ... + 2129658.

It is an arithmetic number, because the mean of its divisors is an integer number (3139199415).

Almost surely, 2^66462226440 is an apocalyptic number.

66462226440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66462226440 is an abundant number, since it is smaller than the sum of its proper divisors (134446536120).

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

66462226440 is a wasteful number, since it uses less digits than its factorization.

66462226440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4228022 (or 4228018 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 66462226440 in words is "sixty-six billion, four hundred sixty-two million, two hundred twenty-six thousand, four hundred forty".