16780138748 has 6 divisors (see below), whose sum is σ = 29365242816. Its totient is φ = 8390069372.

The previous prime is 16780138741. The next prime is 16780138751. The reversal of 16780138748 is 84783108761.

It is a self number, because there is not a number n which added to its sum of digits gives 16780138748.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16780138741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2097517340 + ... + 2097517347.

It is an arithmetic number, because the mean of its divisors is an integer number (4894207136).

Almost surely, 2^16780138748 is an apocalyptic number.

It is an amenable number.

16780138748 is a deficient number, since it is larger than the sum of its proper divisors (12585104068).

16780138748 is a wasteful number, since it uses less digits than its factorization.

16780138748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4195034691 (or 4195034689 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 53.

The spelling of 16780138748 in words is "sixteen billion, seven hundred eighty million, one hundred thirty-eight thousand, seven hundred forty-eight".