16780027550 has 48 divisors (see below), whose sum is σ = 36667309392. Its totient is φ = 5632454400.

The previous prime is 16780027507. The next prime is 16780027553. The reversal of 16780027550 is 5572008761.

It is a junction number, because it is equal to n+sod(n) for n = 16780027498 and 16780027507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16780027553) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1166279 + ... + 1180578.

It is an arithmetic number, because the mean of its divisors is an integer number (763902279).

Almost surely, 2^16780027550 is an apocalyptic number.

16780027550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16780027550 is an abundant number, since it is smaller than the sum of its proper divisors (19887281842).

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

16780027550 is a wasteful number, since it uses less digits than its factorization.

16780027550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346893 (or 2346888 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 41.

The spelling of 16780027550 in words is "sixteen billion, seven hundred eighty million, twenty-seven thousand, five hundred fifty".