53456162640 has 80 divisors (see below), whose sum is σ = 166175971200. Its totient is φ = 14215246336.

The previous prime is 53456162623. The next prime is 53456162647. The reversal of 53456162640 is 4626165435.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×53456162640² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53456162592 and 53456162601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53456162647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224055 + ... + 396374.

It is an arithmetic number, because the mean of its divisors is an integer number (2077199640).

Almost surely, 2^53456162640 is an apocalyptic number.

It is an amenable number.

53456162640 is an abundant number, since it is smaller than the sum of its proper divisors (112719808560).

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

53456162640 is a wasteful number, since it uses less digits than its factorization.

53456162640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620804 (or 620798 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 53456162640 in words is "fifty-three billion, four hundred fifty-six million, one hundred sixty-two thousand, six hundred forty".