2145501550401 has 32 divisors (see below), whose sum is σ = 3304441008000. Its totient is φ = 1223763962880.

The previous prime is 2145501550397. The next prime is 2145501550417. The reversal of 2145501550401 is 1040551055412.

It is a happy number.

It is not a de Polignac number, because 2145501550401 - 2² = 2145501550397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (2145501050401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16174335 + ... + 16306443.

It is an arithmetic number, because the mean of its divisors is an integer number (103263781500).

Almost surely, 2^{2145501550401} is an apocalyptic number.

It is an amenable number.

2145501550401 is a deficient number, since it is larger than the sum of its proper divisors (1158939457599).

2145501550401 is a wasteful number, since it uses less digits than its factorization.

2145501550401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161089.

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 2145501550401 in words is "two trillion, one hundred forty-five billion, five hundred one million, five hundred fifty thousand, four hundred one".