53563323640 has 48 divisors (see below), whose sum is σ = 124816634280. Its totient is φ = 20686512000.

The previous prime is 53563323629. The next prime is 53563323659. The reversal of 53563323640 is 4632336535.

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 = 53563323593 and 53563323602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 762486 + ... + 829765.

Almost surely, 2^53563323640 is an apocalyptic number.

It is an amenable number.

53563323640 is an abundant number, since it is smaller than the sum of its proper divisors (71253310640).

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

53563323640 is a wasteful number, since it uses less digits than its factorization.

53563323640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592320 (or 1592287 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 40.

The spelling of 53563323640 in words is "fifty-three billion, five hundred sixty-three million, three hundred twenty-three thousand, six hundred forty".