20461134012421 has 8 divisors (see below), whose sum is σ = 20559235384800. Its totient is φ = 20363043293040.

The previous prime is 20461134012391. The next prime is 20461134012469. The reversal of 20461134012421 is 12421043116402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20461134012421 - 2³⁷ = 20323695058949 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 (20461134012481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1200750 + ... + 6508768.

It is an arithmetic number, because the mean of its divisors is an integer number (2569904423100).

Almost surely, 2^{20461134012421} is an apocalyptic number.

It is an amenable number.

20461134012421 is a deficient number, since it is larger than the sum of its proper divisors (98101372379).

20461134012421 is a wasteful number, since it uses less digits than its factorization.

20461134012421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5326499.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 20461134012421 its reverse (12421043116402), we get a palindrome (32882177128823).

The spelling of 20461134012421 in words is "twenty trillion, four hundred sixty-one billion, one hundred thirty-four million, twelve thousand, four hundred twenty-one".