53046620640 has 144 divisors (see below), whose sum is σ = 194946399648. Its totient is φ = 13057625088.

The previous prime is 53046620639. The next prime is 53046620677. The reversal of 53046620640 is 4602664035.

53046620640 is a `hidden beast` number, since 5 + 3 + 0 + 4 + 6 + 6 + 2 + 0 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×53046620640² (a number of 22 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 53046620595 and 53046620604.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1398124 + ... + 1435563.

It is an arithmetic number, because the mean of its divisors is an integer number (1353794442).

Almost surely, 2^53046620640 is an apocalyptic number.

It is an amenable number.

53046620640 is an abundant number, since it is smaller than the sum of its proper divisors (141899779008).

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

53046620640 is a wasteful number, since it uses less digits than its factorization.

53046620640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833721 (or 2833710 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 53046620640 in words is "fifty-three billion, forty-six million, six hundred twenty thousand, six hundred forty".