55440312400104 has 64 divisors (see below), whose sum is σ = 142478287251840. Its totient is φ = 17970234347520.

The previous prime is 55440312400087. The next prime is 55440312400127. The reversal of 55440312400104 is 40100421304455.

It is a happy number.

It is a super-2 number, since 2×55440312400104² (a number of 28 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 222720777 + ... + 222969560.

It is an arithmetic number, because the mean of its divisors is an integer number (2226223238310).

Almost surely, 2^{55440312400104} is an apocalyptic number.

It is an amenable number.

55440312400104 is an abundant number, since it is smaller than the sum of its proper divisors (87037974851736).

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

55440312400104 is a wasteful number, since it uses less digits than its factorization.

55440312400104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445690490 (or 445690486 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 55440312400104 its reverse (40100421304455), we get a palindrome (95540733704559).

The spelling of 55440312400104 in words is "fifty-five trillion, four hundred forty billion, three hundred twelve million, four hundred thousand, one hundred four".