66455241540 has 96 divisors (see below), whose sum is σ = 186896941056. Its totient is φ = 17643265920.

The previous prime is 66455241511. The next prime is 66455241553. The reversal of 66455241540 is 4514255466.

It is a junction number, because it is equal to n+sod(n) for n = 66455241492 and 66455241501.

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, 14498089 + ... + 14502671.

It is an arithmetic number, because the mean of its divisors is an integer number (1946843136).

Almost surely, 2^66455241540 is an apocalyptic number.

66455241540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66455241540 is an abundant number, since it is smaller than the sum of its proper divisors (120441699516).

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

66455241540 is a wasteful number, since it uses less digits than its factorization.

66455241540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609 (or 5607 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 66455241540 in words is "sixty-six billion, four hundred fifty-five million, two hundred forty-one thousand, five hundred forty".