66354062438 has 8 divisors (see below), whose sum is σ = 99603907632. Its totient is φ = 33152759896.

The previous prime is 66354062429. The next prime is 66354062441. The reversal of 66354062438 is 83426045366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×66354062438³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66354062392 and 66354062401.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 12132245 + ... + 12137712.

It is an arithmetic number, because the mean of its divisors is an integer number (12450488454).

Almost surely, 2^66354062438 is an apocalyptic number.

66354062438 is a deficient number, since it is larger than the sum of its proper divisors (33249845194).

66354062438 is a wasteful number, since it uses less digits than its factorization.

66354062438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24271326.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 66354062438 in words is "sixty-six billion, three hundred fifty-four million, sixty-two thousand, four hundred thirty-eight".