55521240412000 has 192 divisors, whose sum is σ = 156649595880960. Its totient is φ = 19126934208000.

The previous prime is 55521240411883. The next prime is 55521240412013. The reversal of 55521240412000 is 21404212555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32370484 + ... + 34042483.

It is an arithmetic number, because the mean of its divisors is an integer number (815883311880).

Almost surely, 2^{55521240412000} is an apocalyptic number.

55521240412000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55521240412000 is an abundant number, since it is smaller than the sum of its proper divisors (101128355468960).

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

55521240412000 is a wasteful number, since it uses less digits than its factorization.

55521240412000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66413022 (or 66413004 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 55521240412000 its reverse (21404212555), we get a palindrome (55542644624555).

The spelling of 55521240412000 in words is "fifty-five trillion, five hundred twenty-one billion, two hundred forty million, four hundred twelve thousand".