20004356657530 has 32 divisors (see below), whose sum is σ = 41214265361280. Its totient is φ = 6848228909760.

The previous prime is 20004356657489. The next prime is 20004356657531. The reversal of 20004356657530 is 3575665340002.

It is not an unprimeable number, because it can be changed into a prime (20004356657531) 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, 216779761 + ... + 216872020.

It is an arithmetic number, because the mean of its divisors is an integer number (1287945792540).

Almost surely, 2^{20004356657530} is an apocalyptic number.

20004356657530 is an abundant number, since it is smaller than the sum of its proper divisors (21209908703750).

20004356657530 is a wasteful number, since it uses less digits than its factorization.

20004356657530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433652454.

The product of its (nonzero) digits is 2268000, while the sum is 46.

The spelling of 20004356657530 in words is "twenty trillion, four billion, three hundred fifty-six million, six hundred fifty-seven thousand, five hundred thirty".