2135406401 has 4 divisors (see below), whose sum is σ = 2135719872. Its totient is φ = 2135092932.

The previous prime is 2135406373. The next prime is 2135406473. The reversal of 2135406401 is 1046045312.

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 2135406401 - 2¹⁴ = 2135390017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2135406491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146285 + ... + 160218.

It is an arithmetic number, because the mean of its divisors is an integer number (533929968).

Almost surely, 2^2135406401 is an apocalyptic number.

It is an amenable number.

2135406401 is a deficient number, since it is larger than the sum of its proper divisors (313471).

2135406401 is an equidigital number, since it uses as much as digits as its factorization.

2135406401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313470.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2135406401 is about 46210.4577016935. The cubic root of 2135406401 is about 1287.7360288175.

The spelling of 2135406401 in words is "two billion, one hundred thirty-five million, four hundred six thousand, four hundred one".