66024365266640 has 160 divisors (see below), whose sum is σ = 170672897235456. Its totient is φ = 23548760801280.

The previous prime is 66024365266633. The next prime is 66024365266667. The reversal of 66024365266640 is 4666256342066.

It is a congruent number.

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, 155705792 + ... + 156129248.

Almost surely, 2^{66024365266640} 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 66024365266640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85336448617728).

66024365266640 is an abundant number, since it is smaller than the sum of its proper divisors (104648531968816).

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

66024365266640 is a wasteful number, since it uses less digits than its factorization.

66024365266640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426877 (or 426871 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 56.

The spelling of 66024365266640 in words is "sixty-six trillion, twenty-four billion, three hundred sixty-five million, two hundred sixty-six thousand, six hundred forty".