16516420143 has 8 divisors (see below), whose sum is σ = 22056144768. Its totient is φ = 10993821144.

The previous prime is 16516420139. The next prime is 16516420183. The reversal of 16516420143 is 34102461561.

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

It is not a de Polignac number, because 16516420143 - 2² = 16516420139 is a prime.

It is a super-2 number, since 2×16516420143² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16516420103) 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, 4279155 + ... + 4283012.

It is an arithmetic number, because the mean of its divisors is an integer number (2757018096).

Almost surely, 2^16516420143 is an apocalyptic number.

16516420143 is a deficient number, since it is larger than the sum of its proper divisors (5539724625).

16516420143 is an equidigital number, since it uses as much as digits as its factorization.

16516420143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8562813.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 16516420143 in words is "sixteen billion, five hundred sixteen million, four hundred twenty thousand, one hundred forty-three".