53661052240 has 40 divisors (see below), whose sum is σ = 126876566880. Its totient is φ = 21100615296.

The previous prime is 53661052201. The next prime is 53661052253. The reversal of 53661052240 is 4225016635.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 53661052196 and 53661052205.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 5679714 + ... + 5689153.

It is an arithmetic number, because the mean of its divisors is an integer number (3171914172).

Almost surely, 2^53661052240 is an apocalyptic number.

It is an amenable number.

53661052240 is an abundant number, since it is smaller than the sum of its proper divisors (73215514640).

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

53661052240 is a wasteful number, since it uses less digits than its factorization.

53661052240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11368939 (or 11368933 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 53661052240 its reverse (4225016635), we get a palindrome (57886068875).

The spelling of 53661052240 in words is "fifty-three billion, six hundred sixty-one million, fifty-two thousand, two hundred forty".