55172418336 has 144 divisors (see below), whose sum is σ = 185493672000. Its totient is φ = 15219961344.

The previous prime is 55172418313. The next prime is 55172418337. The reversal of 55172418336 is 63381427155.

It is a happy number.

55172418336 is a `hidden beast` number, since 5 + 517 + 24 + 1 + 83 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a junction number, because it is equal to n+sod(n) for n = 55172418291 and 55172418300.

It is not an unprimeable number, because it can be changed into a prime (55172418337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 413386 + ... + 530313.

It is an arithmetic number, because the mean of its divisors is an integer number (1288150500).

Almost surely, 2^55172418336 is an apocalyptic number.

55172418336 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

55172418336 is an abundant number, since it is smaller than the sum of its proper divisors (130321253664).

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

55172418336 is a wasteful number, since it uses less digits than its factorization.

55172418336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943751 (or 943740 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The spelling of 55172418336 in words is "fifty-five billion, one hundred seventy-two million, four hundred eighteen thousand, three hundred thirty-six".