20627804064 has 48 divisors (see below), whose sum is σ = 61883414208. Its totient is φ = 5893658112.

The previous prime is 20627804027. The next prime is 20627804069. The reversal of 20627804064 is 46040872602.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (20627804069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15347397 + ... + 15348740.

It is an arithmetic number, because the mean of its divisors is an integer number (1289237796).

Almost surely, 2^20627804064 is an apocalyptic number.

20627804064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20627804064 is an abundant number, since it is smaller than the sum of its proper divisors (41255610144).

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

20627804064 is a wasteful number, since it uses less digits than its factorization.

20627804064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30696157 (or 30696149 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 20627804064 in words is "twenty billion, six hundred twenty-seven million, eight hundred four thousand, sixty-four".