66690480024 has 192 divisors, whose sum is σ = 215950026240. Its totient is φ = 18179251200.

The previous prime is 66690480023. The next prime is 66690480037. The reversal of 66690480024 is 42008409666.

It is a Cunningham number, because it is equal to 258245²-1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66690480023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4641219 + ... + 4655565.

It is an arithmetic number, because the mean of its divisors is an integer number (1124739720).

Almost surely, 2^66690480024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66690480024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107975013120).

66690480024 is an abundant number, since it is smaller than the sum of its proper divisors (149259546216).

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

66690480024 is a wasteful number, since it uses less digits than its factorization.

66690480024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14790 (or 14783 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 66690480024 in words is "sixty-six billion, six hundred ninety million, four hundred eighty thousand, twenty-four".