66346522554 has 16 divisors (see below), whose sum is σ = 142900202592. Its totient is φ = 20414314608.

The previous prime is 66346522553. The next prime is 66346522577. The reversal of 66346522554 is 45522564366.

It is a super-2 number, since 2×66346522554² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66346522553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425298144 + ... + 425298299.

It is an arithmetic number, because the mean of its divisors is an integer number (8931262662).

Almost surely, 2^66346522554 is an apocalyptic number.

66346522554 is an abundant number, since it is smaller than the sum of its proper divisors (76553680038).

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

66346522554 is a wasteful number, since it uses less digits than its factorization.

66346522554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850596461.

The product of its digits is 5184000, while the sum is 48.

The spelling of 66346522554 in words is "sixty-six billion, three hundred forty-six million, five hundred twenty-two thousand, five hundred fifty-four".