16020454356 has 36 divisors (see below), whose sum is σ = 42878276532. Its totient is φ = 5026024704.

The previous prime is 16020454309. The next prime is 16020454363. The reversal of 16020454356 is 65345402061.

16020454356 is a `hidden beast` number, since 1 + 60 + 2 + 0 + 4 + 543 + 56 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8974530756 + 7045923600 = 94734^2 + 83940^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 16020454356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13087995 + ... + 13089218.

It is an arithmetic number, because the mean of its divisors is an integer number (1191063237).

Almost surely, 2^16020454356 is an apocalyptic number.

It is an amenable number.

16020454356 is an abundant number, since it is smaller than the sum of its proper divisors (26857822176).

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

16020454356 is a wasteful number, since it uses less digits than its factorization.

16020454356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26177240 (or 26177235 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 16020454356 in words is "sixteen billion, twenty million, four hundred fifty-four thousand, three hundred fifty-six".