16506424087 has 2 divisors, whose sum is σ = 16506424088. Its totient is φ = 16506424086.

The previous prime is 16506424049. The next prime is 16506424141. The reversal of 16506424087 is 78042460561.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16506424087 is a prime.

It is a super-2 number, since 2×16506424087² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16506224087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8253212043 + 8253212044.

It is an arithmetic number, because the mean of its divisors is an integer number (8253212044).

Almost surely, 2^16506424087 is an apocalyptic number.

16506424087 is a deficient number, since it is larger than the sum of its proper divisors (1).

16506424087 is an equidigital number, since it uses as much as digits as its factorization.

16506424087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 16506424087 in words is "sixteen billion, five hundred six million, four hundred twenty-four thousand, eighty-seven".