16411878765 has 48 divisors (see below), whose sum is σ = 28592269056. Its totient is φ = 8708515200.

The previous prime is 16411878739. The next prime is 16411878859. The reversal of 16411878765 is 56787811461.

16411878765 is a `hidden beast` number, since 16 + 411 + 87 + 87 + 65 = 666.

It is not a de Polignac number, because 16411878765 - 2⁶ = 16411878701 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 8770780 + ... + 8772650.

It is an arithmetic number, because the mean of its divisors is an integer number (595672272).

Almost surely, 2^16411878765 is an apocalyptic number.

16411878765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16411878765 is a deficient number, since it is larger than the sum of its proper divisors (12180390291).

16411878765 is a wasteful number, since it uses less digits than its factorization.

16411878765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2770 (or 2767 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 54.

The spelling of 16411878765 in words is "sixteen billion, four hundred eleven million, eight hundred seventy-eight thousand, seven hundred sixty-five".