20543553004 has 24 divisors (see below), whose sum is σ = 38739029168. Its totient is φ = 9476170560.

The previous prime is 20543552999. The next prime is 20543553059. The reversal of 20543553004 is 40035534502.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22227 + ... + 203914.

Almost surely, 2^20543553004 is an apocalyptic number.

It is an amenable number.

20543553004 is a deficient number, since it is larger than the sum of its proper divisors (18195476164).

20543553004 is a wasteful number, since it uses less digits than its factorization.

20543553004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227905 (or 227903 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 31.

The spelling of 20543553004 in words is "twenty billion, five hundred forty-three million, five hundred fifty-three thousand, four".