20065573572 has 48 divisors (see below), whose sum is σ = 51332736000. Its totient is φ = 6049913760.

The previous prime is 20065573499. The next prime is 20065573573. The reversal of 20065573572 is 27537556002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20065573573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355672 + ... + 408207.

It is an arithmetic number, because the mean of its divisors is an integer number (1069432000).

Almost surely, 2^20065573572 is an apocalyptic number.

20065573572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20065573572 is an abundant number, since it is smaller than the sum of its proper divisors (31267162428).

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

20065573572 is a wasteful number, since it uses less digits than its factorization.

20065573572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764096 (or 764094 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 42.

The spelling of 20065573572 in words is "twenty billion, sixty-five million, five hundred seventy-three thousand, five hundred seventy-two".