53661258228 has 12 divisors (see below), whose sum is σ = 125209602560. Its totient is φ = 17887086072.

The previous prime is 53661258223. The next prime is 53661258283. The reversal of 53661258228 is 82285216635.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×53661258228² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53661258223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2235885748 + ... + 2235885771.

Almost surely, 2^53661258228 is an apocalyptic number.

It is an amenable number.

53661258228 is an abundant number, since it is smaller than the sum of its proper divisors (71548344332).

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

53661258228 is a wasteful number, since it uses less digits than its factorization.

53661258228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4471771526 (or 4471771524 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 48.

The spelling of 53661258228 in words is "fifty-three billion, six hundred sixty-one million, two hundred fifty-eight thousand, two hundred twenty-eight".