545551425664 has 128 divisors (see below), whose sum is σ = 1273138312320. Its totient is φ = 228035174400.

The previous prime is 545551425641. The next prime is 545551425691. The reversal of 545551425664 is 466524155545.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6018244 + ... + 6108220.

It is an arithmetic number, because the mean of its divisors is an integer number (9946393065).

Almost surely, 2^545551425664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545551425664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636569156160).

545551425664 is an abundant number, since it is smaller than the sum of its proper divisors (727586886656).

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

545551425664 is a wasteful number, since it uses less digits than its factorization.

545551425664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90166 (or 90154 counting only the distinct ones).

The product of its digits is 14400000, while the sum is 52.

The spelling of 545551425664 in words is "five hundred forty-five billion, five hundred fifty-one million, four hundred twenty-five thousand, six hundred sixty-four".