20812901517330 has 32 divisors (see below), whose sum is σ = 53793345461184. Its totient is φ = 5123175758016.

The previous prime is 20812901517277. The next prime is 20812901517337. The reversal of 20812901517330 is 3371510921802.

It is not an unprimeable number, because it can be changed into a prime (20812901517337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26683206684 + ... + 26683207463.

It is an arithmetic number, because the mean of its divisors is an integer number (1681042045662).

Almost surely, 2^{20812901517330} is an apocalyptic number.

20812901517330 is an abundant number, since it is smaller than the sum of its proper divisors (32980443943854).

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

20812901517330 is a wasteful number, since it uses less digits than its factorization.

20812901517330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53366414170.

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 20812901517330 in words is "twenty trillion, eight hundred twelve billion, nine hundred one million, five hundred seventeen thousand, three hundred thirty".