20051345145320 has 64 divisors (see below), whose sum is σ = 45173141320320. Its totient is φ = 8010300950784.

The previous prime is 20051345145257. The next prime is 20051345145371. The reversal of 20051345145320 is 2354154315002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118898579 + ... + 119067101.

It is an arithmetic number, because the mean of its divisors is an integer number (705830333130).

Almost surely, 2^{20051345145320} is an apocalyptic number.

20051345145320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20051345145320 is an abundant number, since it is smaller than the sum of its proper divisors (25121796175000).

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

20051345145320 is a wasteful number, since it uses less digits than its factorization.

20051345145320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172314 (or 172310 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 20051345145320 in words is "twenty trillion, fifty-one billion, three hundred forty-five million, one hundred forty-five thousand, three hundred twenty".