21652406020534 has 8 divisors (see below), whose sum is σ = 32479108121808. Its totient is φ = 10826036646600.

The previous prime is 21652406020517. The next prime is 21652406020543. The reversal of 21652406020534 is 43502060425612.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83019082 + ... + 83279485.

It is an arithmetic number, because the mean of its divisors is an integer number (4059888515226).

Almost surely, 2^{21652406020534} is an apocalyptic number.

21652406020534 is a deficient number, since it is larger than the sum of its proper divisors (10826702101274).

21652406020534 is a wasteful number, since it uses less digits than its factorization.

21652406020534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166363670.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 21652406020534 in words is "twenty-one trillion, six hundred fifty-two billion, four hundred six million, twenty thousand, five hundred thirty-four".