16361804767878 has 24 divisors (see below), whose sum is σ = 37316396839800. Its totient is φ = 5166885716064.

The previous prime is 16361804767849. The next prime is 16361804767879. The reversal of 16361804767878 is 87876740816361.

16361804767878 is a `hidden beast` number, since 1 + 6 + 3 + 6 + 1 + 80 + 476 + 7 + 8 + 78 = 666.

16361804767878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16361804767879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23920766863 + ... + 23920767546.

It is an arithmetic number, because the mean of its divisors is an integer number (1554849868325).

Almost surely, 2^{16361804767878} is an apocalyptic number.

16361804767878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16361804767878 is an abundant number, since it is smaller than the sum of its proper divisors (20954592071922).

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

16361804767878 is a wasteful number, since it uses less digits than its factorization.

16361804767878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47841534436 (or 47841534433 counting only the distinct ones).

The product of its (nonzero) digits is 455196672, while the sum is 72.

The spelling of 16361804767878 in words is "sixteen trillion, three hundred sixty-one billion, eight hundred four million, seven hundred sixty-seven thousand, eight hundred seventy-eight".