16863071644 has 12 divisors (see below), whose sum is σ = 30793435344. Its totient is φ = 8064947264.

The previous prime is 16863071633. The next prime is 16863071663. The reversal of 16863071644 is 44617036861.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 16863071594 and 16863071603.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 91647037 + ... + 91647220.

It is an arithmetic number, because the mean of its divisors is an integer number (2566119612).

Almost surely, 2^16863071644 is an apocalyptic number.

It is an amenable number.

16863071644 is a deficient number, since it is larger than the sum of its proper divisors (13930363700).

16863071644 is a wasteful number, since it uses less digits than its factorization.

16863071644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183294284 (or 183294282 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 16863071644 in words is "sixteen billion, eight hundred sixty-three million, seventy-one thousand, six hundred forty-four".