16411521371 has 4 divisors (see below), whose sum is σ = 18756024432. Its totient is φ = 14067018312.

The previous prime is 16411521349. The next prime is 16411521431. The reversal of 16411521371 is 17312511461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16411521371 - 2⁶ = 16411521307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16411521271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1172251520 + ... + 1172251533.

It is an arithmetic number, because the mean of its divisors is an integer number (4689006108).

Almost surely, 2^16411521371 is an apocalyptic number.

16411521371 is a deficient number, since it is larger than the sum of its proper divisors (2344503061).

16411521371 is an equidigital number, since it uses as much as digits as its factorization.

16411521371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344503060.

The product of its digits is 5040, while the sum is 32.

The spelling of 16411521371 in words is "sixteen billion, four hundred eleven million, five hundred twenty-one thousand, three hundred seventy-one".