66687421354 has 8 divisors (see below), whose sum is σ = 100041378048. Its totient is φ = 33340295340.

The previous prime is 66687421351. The next prime is 66687421357. The reversal of 66687421354 is 45312478666.

It is an interprime number because it is at equal distance from previous prime (66687421351) and next prime (66687421357).

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

It is not an unprimeable number, because it can be changed into a prime (66687421351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1683192 + ... + 1722355.

It is an arithmetic number, because the mean of its divisors is an integer number (12505172256).

Almost surely, 2^66687421354 is an apocalyptic number.

66687421354 is a deficient number, since it is larger than the sum of its proper divisors (33353956694).

66687421354 is a wasteful number, since it uses less digits than its factorization.

66687421354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3415340.

The product of its digits is 5806080, while the sum is 52.

The spelling of 66687421354 in words is "sixty-six billion, six hundred eighty-seven million, four hundred twenty-one thousand, three hundred fifty-four".