16406873929 has 2 divisors, whose sum is σ = 16406873930. Its totient is φ = 16406873928.

The previous prime is 16406873921. The next prime is 16406873933. The reversal of 16406873929 is 92937860461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16405767225 + 1106704 = 128085^2 + 1052^2 .

It is a cyclic number.

It is not a de Polignac number, because 16406873929 - 2³ = 16406873921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16406873929.

It is not a weakly prime, because it can be changed into another prime (16406873921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8203436964 + 8203436965.

It is an arithmetic number, because the mean of its divisors is an integer number (8203436965).

Almost surely, 2^16406873929 is an apocalyptic number.

It is an amenable number.

16406873929 is a deficient number, since it is larger than the sum of its proper divisors (1).

16406873929 is an equidigital number, since it uses as much as digits as its factorization.

16406873929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 16406873929 in words is "sixteen billion, four hundred six million, eight hundred seventy-three thousand, nine hundred twenty-nine".