20350020555145 has 16 divisors (see below), whose sum is σ = 24834142300032. Its totient is φ = 16005372197760.

The previous prime is 20350020555071. The next prime is 20350020555157. The reversal of 20350020555145 is 54155502005302.

It is not a de Polignac number, because 20350020555145 - 2³¹ = 20347873071497 is a prime.

It is a Duffinian number.

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, 89522307 + ... + 89749336.

It is an arithmetic number, because the mean of its divisors is an integer number (1552133893752).

Almost surely, 2^{20350020555145} is an apocalyptic number.

It is an amenable number.

20350020555145 is a deficient number, since it is larger than the sum of its proper divisors (4484121744887).

20350020555145 is a wasteful number, since it uses less digits than its factorization.

20350020555145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179272032.

The product of its (nonzero) digits is 150000, while the sum is 37.

The spelling of 20350020555145 in words is "twenty trillion, three hundred fifty billion, twenty million, five hundred fifty-five thousand, one hundred forty-five".