566615550402 has 128 divisors (see below), whose sum is σ = 1378536848640. Its totient is φ = 171087552000.

The previous prime is 566615550377. The next prime is 566615550407. The reversal of 566615550402 is 204055516665.

566615550402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×566615550402² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (566615550407) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 248405502 + ... + 248407782.

It is an arithmetic number, because the mean of its divisors is an integer number (10769819130).

Almost surely, 2^566615550402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 566615550402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (689268424320).

566615550402 is an abundant number, since it is smaller than the sum of its proper divisors (811921298238).

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

566615550402 is a wasteful number, since it uses less digits than its factorization.

566615550402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617 (or 3611 counting only the distinct ones).

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

The spelling of 566615550402 in words is "five hundred sixty-six billion, six hundred fifteen million, five hundred fifty thousand, four hundred two".