20420695005312 has 64 divisors (see below), whose sum is σ = 61991395560000. Its totient is φ = 5834484286464.

The previous prime is 20420695005311. The next prime is 20420695005313. The reversal of 20420695005312 is 21350059602402.

It is an interprime number because it is at equal distance from previous prime (20420695005311) and next prime (20420695005313).

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (20420695005311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3798489687 + ... + 3798495062.

It is an arithmetic number, because the mean of its divisors is an integer number (968615555625).

Almost surely, 2^{20420695005312} is an apocalyptic number.

It is an amenable number.

20420695005312 is an abundant number, since it is smaller than the sum of its proper divisors (41570700554688).

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

20420695005312 is an equidigital number, since it uses as much as digits as its factorization.

20420695005312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7596984773 (or 7596984761 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 20420695005312 in words is "twenty trillion, four hundred twenty billion, six hundred ninety-five million, five thousand, three hundred twelve".