52465561920 has 448 divisors, whose sum is σ = 191044738560. Its totient is φ = 13544423424.

The previous prime is 52465561913. The next prime is 52465561949. The reversal of 52465561920 is 2916556425.

52465561920 is a `hidden beast` number, since 5 + 2 + 4 + 6 + 5 + 5 + 619 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 107731917 + ... + 107732403.

Almost surely, 2^52465561920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52465561920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95522369280).

52465561920 is an abundant number, since it is smaller than the sum of its proper divisors (138579176640).

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

52465561920 is a wasteful number, since it uses less digits than its factorization.

52465561920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 52465561920 in words is "fifty-two billion, four hundred sixty-five million, five hundred sixty-one thousand, nine hundred twenty".