20305326453064 has 64 divisors (see below), whose sum is σ = 41217526563840. Its totient is φ = 9350271194880.

The previous prime is 20305326453029. The next prime is 20305326453077. The reversal of 20305326453064 is 46035462350302.

It is a self number, because there is not a number n which added to its sum of digits gives 20305326453064.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7911439 + ... + 10158814.

It is an arithmetic number, because the mean of its divisors is an integer number (644023852560).

Almost surely, 2^{20305326453064} is an apocalyptic number.

It is an amenable number.

20305326453064 is an abundant number, since it is smaller than the sum of its proper divisors (20912200110776).

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

20305326453064 is a wasteful number, since it uses less digits than its factorization.

20305326453064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18070510 (or 18070506 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 43.

The spelling of 20305326453064 in words is "twenty trillion, three hundred five billion, three hundred twenty-six million, four hundred fifty-three thousand, sixty-four".