16020450361 has 16 divisors (see below), whose sum is σ = 17125113744. Its totient is φ = 14934011904.

The previous prime is 16020450311. The next prime is 16020450377. The reversal of 16020450361 is 16305402061.

It can be written as a sum of positive squares in 8 ways, for example, as 5066734761 + 10953715600 = 71181^2 + 104660^2 .

It is a cyclic number.

It is not a de Polignac number, because 16020450361 - 2²³ = 16012061753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16020450301) 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 15 ways as a sum of consecutive naturals, for example, 4403035 + ... + 4406671.

It is an arithmetic number, because the mean of its divisors is an integer number (1070319609).

Almost surely, 2^16020450361 is an apocalyptic number.

It is an amenable number.

16020450361 is a deficient number, since it is larger than the sum of its proper divisors (1104663383).

16020450361 is a wasteful number, since it uses less digits than its factorization.

16020450361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 16020450361 in words is "sixteen billion, twenty million, four hundred fifty thousand, three hundred sixty-one".