66206462442 has 16 divisors (see below), whose sum is σ = 133627723680. Its totient is φ = 21866354352.

The previous prime is 66206462431. The next prime is 66206462459. The reversal of 66206462442 is 24426460266.

It is a junction number, because it is equal to n+sod(n) for n = 66206462394 and 66206462403.

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, 50615908 + ... + 50617215.

It is an arithmetic number, because the mean of its divisors is an integer number (8351732730).

Almost surely, 2^66206462442 is an apocalyptic number.

66206462442 is an abundant number, since it is smaller than the sum of its proper divisors (67421261238).

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

66206462442 is a wasteful number, since it uses less digits than its factorization.

66206462442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101233237.

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 66206462442 in words is "sixty-six billion, two hundred six million, four hundred sixty-two thousand, four hundred forty-two".