2021400416145 has 64 divisors (see below), whose sum is σ = 3702234470400. Its totient is φ = 932223536640.

The previous prime is 2021400416141. The next prime is 2021400416159. The reversal of 2021400416145 is 5416140041202.

It is not a de Polignac number, because 2021400416145 - 2² = 2021400416141 is a prime.

It is a super-2 number, since 2×2021400416145² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2021400416141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 808540 + ... + 2167149.

It is an arithmetic number, because the mean of its divisors is an integer number (57847413600).

Almost surely, 2^{2021400416145} is an apocalyptic number.

It is an amenable number.

2021400416145 is a deficient number, since it is larger than the sum of its proper divisors (1680834054255).

2021400416145 is a wasteful number, since it uses less digits than its factorization.

2021400416145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975910.

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 2021400416145 its reverse (5416140041202), we get a palindrome (7437540457347).

The spelling of 2021400416145 in words is "two trillion, twenty-one billion, four hundred million, four hundred sixteen thousand, one hundred forty-five".