5401421335421 has 4 divisors (see below), whose sum is σ = 5466498700992. Its totient is φ = 5336343969852.

The previous prime is 5401421335411. The next prime is 5401421335433. The reversal of 5401421335421 is 1245331241045.

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 5401421335421 - 2⁶ = 5401421335357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5401421335411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32538682661 + ... + 32538682826.

It is an arithmetic number, because the mean of its divisors is an integer number (1366624675248).

Almost surely, 2^{5401421335421} is an apocalyptic number.

It is an amenable number.

5401421335421 is a deficient number, since it is larger than the sum of its proper divisors (65077365571).

5401421335421 is an equidigital number, since it uses as much as digits as its factorization.

5401421335421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65077365570.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 5401421335421 its reverse (1245331241045), we get a palindrome (6646752576466).

The spelling of 5401421335421 in words is "five trillion, four hundred one billion, four hundred twenty-one million, three hundred thirty-five thousand, four hundred twenty-one".