66011240634 has 64 divisors (see below), whose sum is σ = 134199486720. Its totient is φ = 21644812800.

The previous prime is 66011240621. The next prime is 66011240653. The reversal of 66011240634 is 43604211066.

It is a junction number, because it is equal to n+sod(n) for n = 66011240595 and 66011240604.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55331542 + ... + 55332734.

It is an arithmetic number, because the mean of its divisors is an integer number (2096866980).

Almost surely, 2^66011240634 is an apocalyptic number.

66011240634 is an abundant number, since it is smaller than the sum of its proper divisors (68188246086).

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

66011240634 is a wasteful number, since it uses less digits than its factorization.

66011240634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895.

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 66011240634 in words is "sixty-six billion, eleven million, two hundred forty thousand, six hundred thirty-four".