55665446772 has 48 divisors (see below), whose sum is σ = 140602105280. Its totient is φ = 17039075328.

The previous prime is 55665446687. The next prime is 55665446777. The reversal of 55665446772 is 27764456655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55665446777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 894322 + ... + 954537.

Almost surely, 2^55665446772 is an apocalyptic number.

55665446772 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55665446772 is an abundant number, since it is smaller than the sum of its proper divisors (84936658508).

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

55665446772 is a wasteful number, since it uses less digits than its factorization.

55665446772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849072 (or 1849070 counting only the distinct ones).

The product of its digits is 42336000, while the sum is 57.

The spelling of 55665446772 in words is "fifty-five billion, six hundred sixty-five million, four hundred forty-six thousand, seven hundred seventy-two".