66026000502 has 768 divisors, whose sum is σ = 212751360000. Its totient is φ = 14920899840.

The previous prime is 66026000497. The next prime is 66026000503. The reversal of 66026000502 is 20500062066.

66026000502 is a `hidden beast` number, since 6 + 6 + 0 + 2 + 600 + 0 + 50 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66026000503) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 368860249 + ... + 368860427.

It is an arithmetic number, because the mean of its divisors is an integer number (277020000).

Almost surely, 2^66026000502 is an apocalyptic number.

66026000502 is the 128478-th decagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66026000502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106375680000).

66026000502 is an abundant number, since it is smaller than the sum of its proper divisors (146725359498).

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

66026000502 is a wasteful number, since it uses less digits than its factorization.

66026000502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 66026000502 its reverse (20500062066), we get a palindrome (86526062568).

The spelling of 66026000502 in words is "sixty-six billion, twenty-six million, five hundred two", and thus it is an aban number.