66135330553242 has 128 divisors (see below), whose sum is σ = 140214538598400. Its totient is φ = 20762059161600.

The previous prime is 66135330553079. The next prime is 66135330553319. The reversal of 66135330553242 is 24235503353166.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66135330553191 and 66135330553200.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11291670378 + ... + 11291676234.

It is an arithmetic number, because the mean of its divisors is an integer number (1095426082800).

Almost surely, 2^{66135330553242} is an apocalyptic number.

66135330553242 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

66135330553242 is an abundant number, since it is smaller than the sum of its proper divisors (74079208045158).

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

66135330553242 is a wasteful number, since it uses less digits than its factorization.

66135330553242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9352.

The product of its (nonzero) digits is 5832000, while the sum is 48.

The spelling of 66135330553242 in words is "sixty-six trillion, one hundred thirty-five billion, three hundred thirty million, five hundred fifty-three thousand, two hundred forty-two".