16257686263 has 48 divisors (see below), whose sum is σ = 20661841920. Its totient is φ = 12521164032.

The previous prime is 16257686257. The next prime is 16257686273. The reversal of 16257686263 is 36268675261.

It is not a de Polignac number, because 16257686263 - 2⁵ = 16257686231 is a prime.

It is a super-2 number, since 2×16257686263² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16257686263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16257686233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6821170 + ... + 6823552.

It is an arithmetic number, because the mean of its divisors is an integer number (430455040).

Almost surely, 2^16257686263 is an apocalyptic number.

16257686263 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16257686263 is a deficient number, since it is larger than the sum of its proper divisors (4404155657).

16257686263 is a wasteful number, since it uses less digits than its factorization.

16257686263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568 (or 2555 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 52.

The spelling of 16257686263 in words is "sixteen billion, two hundred fifty-seven million, six hundred eighty-six thousand, two hundred sixty-three".