20004047632520 has 64 divisors (see below), whose sum is σ = 51556153017600. Its totient is φ = 6842907498240.

The previous prime is 20004047632511. The next prime is 20004047632529. The reversal of 20004047632520 is 2523674040002.

It is an interprime number because it is at equal distance from previous prime (20004047632511) and next prime (20004047632529).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (20004047632529) 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, 81247271 + ... + 81493110.

It is an arithmetic number, because the mean of its divisors is an integer number (805564890900).

Almost surely, 2^{20004047632520} is an apocalyptic number.

20004047632520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20004047632520 is an abundant number, since it is smaller than the sum of its proper divisors (31552105385080).

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

20004047632520 is a wasteful number, since it uses less digits than its factorization.

20004047632520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162740838 (or 162740834 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 20004047632520 in words is "twenty trillion, four billion, forty-seven million, six hundred thirty-two thousand, five hundred twenty".