20061543724 has 12 divisors (see below), whose sum is σ = 35109640384. Its totient is φ = 10030217904.

The previous prime is 20061543721. The next prime is 20061543731. The reversal of 20061543724 is 42734516002.

It is a self number, because there is not a number n which added to its sum of digits gives 20061543724.

It is not an unprimeable number, because it can be changed into a prime (20061543721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50844 + ... + 206659.

Almost surely, 2^20061543724 is an apocalyptic number.

It is an amenable number.

20061543724 is a deficient number, since it is larger than the sum of its proper divisors (15048096660).

20061543724 is a wasteful number, since it uses less digits than its factorization.

20061543724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276984 (or 276982 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The spelling of 20061543724 in words is "twenty billion, sixty-one million, five hundred forty-three thousand, seven hundred twenty-four".