2154414403421 has 32 divisors (see below), whose sum is σ = 2594866095360. Its totient is φ = 1747365613056.

The previous prime is 2154414403409. The next prime is 2154414403429. The reversal of 2154414403421 is 1243044144512.

It is not a de Polignac number, because 2154414403421 - 2¹⁸ = 2154414141277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154414403429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 770257595 + ... + 770260391.

It is an arithmetic number, because the mean of its divisors is an integer number (81089565480).

Almost surely, 2^{2154414403421} is an apocalyptic number.

It is an amenable number.

2154414403421 is a deficient number, since it is larger than the sum of its proper divisors (440451691939).

2154414403421 is a wasteful number, since it uses less digits than its factorization.

2154414403421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7653.

The product of its (nonzero) digits is 61440, while the sum is 35.

Adding to 2154414403421 its reverse (1243044144512), we get a palindrome (3397458547933).

The spelling of 2154414403421 in words is "two trillion, one hundred fifty-four billion, four hundred fourteen million, four hundred three thousand, four hundred twenty-one".