53575787916 has 144 divisors (see below), whose sum is σ = 159108389440. Its totient is φ = 14879531520.

The previous prime is 53575787899. The next prime is 53575787939. The reversal of 53575787916 is 61978757535.

53575787916 is a `hidden beast` number, since 5 + 3 + 57 + 578 + 7 + 9 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13321986 + ... + 13326006.

Almost surely, 2^53575787916 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 53575787916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79554194720).

53575787916 is an abundant number, since it is smaller than the sum of its proper divisors (105532601524).

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

53575787916 is a wasteful number, since it uses less digits than its factorization.

53575787916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5504 (or 5499 counting only the distinct ones).

The product of its digits is 55566000, while the sum is 63.

The spelling of 53575787916 in words is "fifty-three billion, five hundred seventy-five million, seven hundred eighty-seven thousand, nine hundred sixteen".