20363204720 has 20 divisors (see below), whose sum is σ = 47344451160. Its totient is φ = 8145281856.

The previous prime is 20363204711. The next prime is 20363204731. The reversal of 20363204720 is 2740236302.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127269950 + ... + 127270109.

It is an arithmetic number, because the mean of its divisors is an integer number (2367222558).

Almost surely, 2^20363204720 is an apocalyptic number.

20363204720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20363204720 is an abundant number, since it is smaller than the sum of its proper divisors (26981246440).

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

20363204720 is a wasteful number, since it uses less digits than its factorization.

20363204720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254540072 (or 254540066 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 29.

The spelling of 20363204720 in words is "twenty billion, three hundred sixty-three million, two hundred four thousand, seven hundred twenty".