20542572031812 has 24 divisors (see below), whose sum is σ = 48013498897056. Its totient is φ = 6835976750208.

The previous prime is 20542572031811. The next prime is 20542572031823. The reversal of 20542572031812 is 21813027524502.

It is not an unprimeable number, because it can be changed into a prime (20542572031811) 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, 1443400138 + ... + 1443414369.

It is an arithmetic number, because the mean of its divisors is an integer number (2000562454044).

Almost surely, 2^{20542572031812} is an apocalyptic number.

It is an amenable number.

20542572031812 is an abundant number, since it is smaller than the sum of its proper divisors (27470926865244).

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

20542572031812 is a wasteful number, since it uses less digits than its factorization.

20542572031812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886815107 (or 2886815105 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 20542572031812 in words is "twenty trillion, five hundred forty-two billion, five hundred seventy-two million, thirty-one thousand, eight hundred twelve".