16782043551 has 32 divisors (see below), whose sum is σ = 27642263040. Its totient is φ = 8819121024.

The previous prime is 16782043519. The next prime is 16782043583. The reversal of 16782043551 is 15534028761.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16782043519) and next prime (16782043583).

It is not a de Polignac number, because 16782043551 - 2⁵ = 16782043519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16782043501) 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 31 ways as a sum of consecutive naturals, for example, 40825 + ... + 187698.

It is an arithmetic number, because the mean of its divisors is an integer number (863820720).

Almost surely, 2^16782043551 is an apocalyptic number.

16782043551 is a deficient number, since it is larger than the sum of its proper divisors (10860219489).

16782043551 is a wasteful number, since it uses less digits than its factorization.

16782043551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228815.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 16782043551 in words is "sixteen billion, seven hundred eighty-two million, forty-three thousand, five hundred fifty-one".