53435543440 has 40 divisors (see below), whose sum is σ = 124338791808. Its totient is φ = 21356814720.

The previous prime is 53435543429. The next prime is 53435543461. The reversal of 53435543440 is 4434553435.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 53435543393 and 53435543402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172822 + ... + 369781.

Almost surely, 2^53435543440 is an apocalyptic number.

It is an amenable number.

53435543440 is an abundant number, since it is smaller than the sum of its proper divisors (70903248368).

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

53435543440 is a wasteful number, since it uses less digits than its factorization.

53435543440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543847 (or 543841 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 40.

The spelling of 53435543440 in words is "fifty-three billion, four hundred thirty-five million, five hundred forty-three thousand, four hundred forty".