66240040590 has 24 divisors (see below), whose sum is σ = 172224105768. Its totient is φ = 17664010800.

The previous prime is 66240040589. The next prime is 66240040667. The reversal of 66240040590 is 9504004266.

66240040590 is a `hidden beast` number, since 6 + 6 + 24 + 0 + 0 + 40 + 590 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 368000136 + ... + 368000315.

It is an arithmetic number, because the mean of its divisors is an integer number (7176004407).

Almost surely, 2^66240040590 is an apocalyptic number.

66240040590 is an abundant number, since it is smaller than the sum of its proper divisors (105984065178).

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

66240040590 is a wasteful number, since it uses less digits than its factorization.

66240040590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736000464 (or 736000461 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 66240040590 in words is "sixty-six billion, two hundred forty million, forty thousand, five hundred ninety".