21413124053254 has 4 divisors (see below), whose sum is σ = 32119686079884. Its totient is φ = 10706562026626.

The previous prime is 21413124053239. The next prime is 21413124053281. The reversal of 21413124053254 is 45235042131412.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5353281013312 + ... + 5353281013315.

It is an arithmetic number, because the mean of its divisors is an integer number (8029921519971).

Almost surely, 2^{21413124053254} is an apocalyptic number.

21413124053254 is a deficient number, since it is larger than the sum of its proper divisors (10706562026630).

21413124053254 is a wasteful number, since it uses less digits than its factorization.

21413124053254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10706562026629.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 21413124053254 its reverse (45235042131412), we get a palindrome (66648166184666).

The spelling of 21413124053254 in words is "twenty-one trillion, four hundred thirteen billion, one hundred twenty-four million, fifty-three thousand, two hundred fifty-four".