21054325516334 has 8 divisors (see below), whose sum is σ = 34452532663128. Its totient is φ = 9570147961960.

The previous prime is 21054325516333. The next prime is 21054325516351. The reversal of 21054325516334 is 43361552345012.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21054325516333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478507398077 + ... + 478507398120.

It is an arithmetic number, because the mean of its divisors is an integer number (4306566582891).

Almost surely, 2^{21054325516334} is an apocalyptic number.

21054325516334 is a deficient number, since it is larger than the sum of its proper divisors (13398207146794).

21054325516334 is a wasteful number, since it uses less digits than its factorization.

21054325516334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957014796210.

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 21054325516334 in words is "twenty-one trillion, fifty-four billion, three hundred twenty-five million, five hundred sixteen thousand, three hundred thirty-four".