16520211158064 has 80 divisors (see below), whose sum is σ = 43338118028160. Its totient is φ = 5421549703680.

The previous prime is 16520211158063. The next prime is 16520211158153. The reversal of 16520211158064 is 46085111202561.

It is not an unprimeable number, because it can be changed into a prime (16520211158063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4405932 + ... + 7242420.

It is an arithmetic number, because the mean of its divisors is an integer number (541726475352).

Almost surely, 2^{16520211158064} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16520211158064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21669059014080).

16520211158064 is an abundant number, since it is smaller than the sum of its proper divisors (26817906870096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16520211158064 is a wasteful number, since it uses less digits than its factorization.

16520211158064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838378 (or 2838372 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The spelling of 16520211158064 in words is "sixteen trillion, five hundred twenty billion, two hundred eleven million, one hundred fifty-eight thousand, sixty-four".