21552401302534 has 8 divisors (see below), whose sum is σ = 32328928726560. Its totient is φ = 10776091727016.

The previous prime is 21552401302517. The next prime is 21552401302561. The reversal of 21552401302534 is 43520310425512.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 21552401302493 and 21552401302502.

It is a congruent number.

It is an unprimeable number.

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, 54214569 + ... + 54610660.

It is an arithmetic number, because the mean of its divisors is an integer number (4041116090820).

Almost surely, 2^{21552401302534} is an apocalyptic number.

21552401302534 is a deficient number, since it is larger than the sum of its proper divisors (10776527424026).

21552401302534 is a wasteful number, since it uses less digits than its factorization.

21552401302534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108924254.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 21552401302534 in words is "twenty-one trillion, five hundred fifty-two billion, four hundred one million, three hundred two thousand, five hundred thirty-four".