20564746060 has 12 divisors (see below), whose sum is σ = 43185966768. Its totient is φ = 8225898416.

The previous prime is 20564746049. The next prime is 20564746067. The reversal of 20564746060 is 6064746502.

It is a super-3 number, since 3×20564746060³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20564746067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514118632 + ... + 514118671.

It is an arithmetic number, because the mean of its divisors is an integer number (3598830564).

Almost surely, 2^20564746060 is an apocalyptic number.

20564746060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20564746060 is an abundant number, since it is smaller than the sum of its proper divisors (22621220708).

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

20564746060 is a wasteful number, since it uses less digits than its factorization.

20564746060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028237312 (or 1028237310 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 20564746060 in words is "twenty billion, five hundred sixty-four million, seven hundred forty-six thousand, sixty".