66252516552 has 96 divisors (see below), whose sum is σ = 191127081600. Its totient is φ = 20660577792.

The previous prime is 66252516541. The next prime is 66252516563. The reversal of 66252516552 is 25561525266.

66252516552 is a `hidden beast` number, since 6 + 62 + 5 + 25 + 16 + 552 = 666.

It is an interprime number because it is at equal distance from previous prime (66252516541) and next prime (66252516563).

It is a junction number, because it is equal to n+sod(n) for n = 66252516498 and 66252516507.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42349 + ... + 366467.

It is an arithmetic number, because the mean of its divisors is an integer number (1990907100).

Almost surely, 2^66252516552 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 66252516552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95563540800).

66252516552 is an abundant number, since it is smaller than the sum of its proper divisors (124874565048).

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

66252516552 is a wasteful number, since it uses less digits than its factorization.

66252516552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324315 (or 324308 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 45.

The spelling of 66252516552 in words is "sixty-six billion, two hundred fifty-two million, five hundred sixteen thousand, five hundred fifty-two".