53454440809 has 16 divisors (see below), whose sum is σ = 68269977216. Its totient is φ = 40636886400.

The previous prime is 53454440803. The next prime is 53454440861. The reversal of 53454440809 is 90804445435.

It is not a de Polignac number, because 53454440809 - 2¹⁵ = 53454408041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53454440803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8462862 + ... + 8469175.

It is an arithmetic number, because the mean of its divisors is an integer number (4266873576).

Almost surely, 2^53454440809 is an apocalyptic number.

It is an amenable number.

53454440809 is a deficient number, since it is larger than the sum of its proper divisors (14815536407).

53454440809 is a wasteful number, since it uses less digits than its factorization.

53454440809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16932096.

The product of its (nonzero) digits is 1382400, while the sum is 46.

The spelling of 53454440809 in words is "fifty-three billion, four hundred fifty-four million, four hundred forty thousand, eight hundred nine".