16678915540 has 48 divisors (see below), whose sum is σ = 42136214400. Its totient is φ = 5417511552.

The previous prime is 16678915481. The next prime is 16678915607. The reversal of 16678915540 is 4551987661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3132475 + ... + 3137794.

It is an arithmetic number, because the mean of its divisors is an integer number (877837800).

Almost surely, 2^16678915540 is an apocalyptic number.

16678915540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16678915540 is an abundant number, since it is smaller than the sum of its proper divisors (25457298860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16678915540 is a wasteful number, since it uses less digits than its factorization.

16678915540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6270304 (or 6270302 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 52.

It can be divided in two parts, 166789 and 15540, that added together give a square (182329 = 427²).

The spelling of 16678915540 in words is "sixteen billion, six hundred seventy-eight million, nine hundred fifteen thousand, five hundred forty".