66240036496 has 20 divisors (see below), whose sum is σ = 129127438192. Its totient is φ = 32916826656.

The previous prime is 66240036491. The next prime is 66240036503. The reversal of 66240036496 is 69463004266.

It is not an unprimeable number, because it can be changed into a prime (66240036491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12696786 + ... + 12702001.

Almost surely, 2^66240036496 is an apocalyptic number.

It is an amenable number.

66240036496 is a deficient number, since it is larger than the sum of its proper divisors (62887401696).

66240036496 is a wasteful number, since it uses less digits than its factorization.

66240036496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25398958 (or 25398952 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 46.

It can be divided in two parts, 662400 and 36496, that added together give a palindrome (698896).

The spelling of 66240036496 in words is "sixty-six billion, two hundred forty million, thirty-six thousand, four hundred ninety-six".