66412235022 has 64 divisors (see below), whose sum is σ = 158083190784. Its totient is φ = 18200286720.

The previous prime is 66412235009. The next prime is 66412235023. The reversal of 66412235022 is 22053221466.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66412235023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78573 + ... + 372824.

It is an arithmetic number, because the mean of its divisors is an integer number (2470049856).

Almost surely, 2^66412235022 is an apocalyptic number.

66412235022 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

66412235022 is an abundant number, since it is smaller than the sum of its proper divisors (91670955762).

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

66412235022 is a wasteful number, since it uses less digits than its factorization.

66412235022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451553.

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 66412235022 its reverse (22053221466), we get a palindrome (88465456488).

The spelling of 66412235022 in words is "sixty-six billion, four hundred twelve million, two hundred thirty-five thousand, twenty-two".