20573326512 has 80 divisors (see below), whose sum is σ = 59084378080. Its totient is φ = 6854139648.

The previous prime is 20573326507. The next prime is 20573326531. The reversal of 20573326512 is 21562337502.

20573326512 is a `hidden beast` number, since 2 + 0 + 573 + 32 + 6 + 51 + 2 = 666.

It is a super-2 number, since 2×20573326512² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 875298 + ... + 898494.

It is an arithmetic number, because the mean of its divisors is an integer number (738554726).

Almost surely, 2^20573326512 is an apocalyptic number.

It is an amenable number.

20573326512 is an abundant number, since it is smaller than the sum of its proper divisors (38511051568).

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

20573326512 is a wasteful number, since it uses less digits than its factorization.

20573326512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25267 (or 25255 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The spelling of 20573326512 in words is "twenty billion, five hundred seventy-three million, three hundred twenty-six thousand, five hundred twelve".