66211437246 has 16 divisors (see below), whose sum is σ = 132425547408. Its totient is φ = 22070033600.

The previous prime is 66211437221. The next prime is 66211437251. The reversal of 66211437246 is 64273411266.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66211437198 and 66211437207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372106 + ... + 520466.

It is an arithmetic number, because the mean of its divisors is an integer number (8276596713).

Almost surely, 2^66211437246 is an apocalyptic number.

66211437246 is an abundant number, since it is smaller than the sum of its proper divisors (66214110162).

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

66211437246 is a wasteful number, since it uses less digits than its factorization.

66211437246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222747.

The product of its digits is 290304, while the sum is 42.

The spelling of 66211437246 in words is "sixty-six billion, two hundred eleven million, four hundred thirty-seven thousand, two hundred forty-six".