21113515504113 has 8 divisors (see below), whose sum is σ = 28153925184000. Its totient is φ = 14074391413488.

The previous prime is 21113515504111. The next prime is 21113515504117. The reversal of 21113515504113 is 31140551531112.

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

It is not a de Polignac number, because 21113515504113 - 2¹ = 21113515504111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21113515504111) 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, 321358993 + ... + 321424686.

It is an arithmetic number, because the mean of its divisors is an integer number (3519240648000).

Almost surely, 2^{21113515504113} is an apocalyptic number.

It is an amenable number.

21113515504113 is a deficient number, since it is larger than the sum of its proper divisors (7040409679887).

21113515504113 is a wasteful number, since it uses less digits than its factorization.

21113515504113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642794631.

The product of its (nonzero) digits is 9000, while the sum is 33.

The spelling of 21113515504113 in words is "twenty-one trillion, one hundred thirteen billion, five hundred fifteen million, five hundred four thousand, one hundred thirteen".