2150420405401 has 4 divisors (see below), whose sum is σ = 2150922492432. Its totient is φ = 2149918318372.

The previous prime is 2150420405383. The next prime is 2150420405407. The reversal of 2150420405401 is 1045040240512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2150420405401 - 2¹⁷ = 2150420274329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2150420405401.

It is not an unprimeable number, because it can be changed into a prime (2150420405407) 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 3 ways as a sum of consecutive naturals, for example, 251037091 + ... + 251045656.

It is an arithmetic number, because the mean of its divisors is an integer number (537730623108).

Almost surely, 2^{2150420405401} is an apocalyptic number.

It is an amenable number.

2150420405401 is a deficient number, since it is larger than the sum of its proper divisors (502087031).

2150420405401 is an equidigital number, since it uses as much as digits as its factorization.

2150420405401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502087030.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 2150420405401 its reverse (1045040240512), we get a palindrome (3195460645913).

The spelling of 2150420405401 in words is "two trillion, one hundred fifty billion, four hundred twenty million, four hundred five thousand, four hundred one".