16406873957 has 2 divisors, whose sum is σ = 16406873958. Its totient is φ = 16406873956.

The previous prime is 16406873941. The next prime is 16406874013. The reversal of 16406873957 is 75937860461.

It is an a-pointer prime, because the next prime (16406874013) can be obtained adding 16406873957 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16339486276 + 67387681 = 127826^2 + 8209^2 .

It is a cyclic number.

It is not a de Polignac number, because 16406873957 - 2⁴ = 16406873941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16406873657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8203436978 + 8203436979.

It is an arithmetic number, because the mean of its divisors is an integer number (8203436979).

Almost surely, 2^16406873957 is an apocalyptic number.

It is an amenable number.

16406873957 is a deficient number, since it is larger than the sum of its proper divisors (1).

16406873957 is an equidigital number, since it uses as much as digits as its factorization.

16406873957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 16406873957 in words is "sixteen billion, four hundred six million, eight hundred seventy-three thousand, nine hundred fifty-seven".