55836401781852 has 18 divisors (see below), whose sum is σ = 141142015615328. Its totient is φ = 18612133927272.

The previous prime is 55836401781841. The next prime is 55836401781877. The reversal of 55836401781852 is 25818710463855.

It is a happy number.

55836401781852 is a `hidden beast` number, since 5 + 5 + 83 + 6 + 401 + 78 + 1 + 85 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 55836401781852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 775505580268 + ... + 775505580339.

Almost surely, 2^{55836401781852} is an apocalyptic number.

It is an amenable number.

55836401781852 is an abundant number, since it is smaller than the sum of its proper divisors (85305613833476).

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

55836401781852 is a wasteful number, since it uses less digits than its factorization.

55836401781852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551011160617 (or 1551011160612 counting only the distinct ones).

The product of its (nonzero) digits is 64512000, while the sum is 63.

The spelling of 55836401781852 in words is "fifty-five trillion, eight hundred thirty-six billion, four hundred one million, seven hundred eighty-one thousand, eight hundred fifty-two".