16118263957 has 2 divisors, whose sum is σ = 16118263958. Its totient is φ = 16118263956.

The previous prime is 16118263937. The next prime is 16118263961. The reversal of 16118263957 is 75936281161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15544853041 + 573410916 = 124679^2 + 23946^2 .

It is a cyclic number.

It is not a de Polignac number, because 16118263957 - 2¹⁹ = 16117739669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16118263957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16118263937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8059131978 + 8059131979.

It is an arithmetic number, because the mean of its divisors is an integer number (8059131979).

Almost surely, 2^16118263957 is an apocalyptic number.

It is an amenable number.

16118263957 is a deficient number, since it is larger than the sum of its proper divisors (1).

16118263957 is an equidigital number, since it uses as much as digits as its factorization.

16118263957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 49.

The spelling of 16118263957 in words is "sixteen billion, one hundred eighteen million, two hundred sixty-three thousand, nine hundred fifty-seven".