16400277802903 has 2 divisors, whose sum is σ = 16400277802904. Its totient is φ = 16400277802902.

The previous prime is 16400277802877. The next prime is 16400277802957. The reversal of 16400277802903 is 30920877200461.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (30920877200461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16400277802903 - 2¹³ = 16400277794711 is a prime.

It is a super-2 number, since 2×16400277802903² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16400277802003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8200138901451 + 8200138901452.

It is an arithmetic number, because the mean of its divisors is an integer number (8200138901452).

Almost surely, 2^{16400277802903} is an apocalyptic number.

16400277802903 is a deficient number, since it is larger than the sum of its proper divisors (1).

16400277802903 is an equidigital number, since it uses as much as digits as its factorization.

16400277802903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 16400277802903 in words is "sixteen trillion, four hundred billion, two hundred seventy-seven million, eight hundred two thousand, nine hundred three".