555745639680 has 1440 divisors, whose sum is σ = 2518668472320. Its totient is φ = 113646551040.

The previous prime is 555745639621. The next prime is 555745639693. The reversal of 555745639680 is 86936547555.

It is a happy number.

555745639680 is a `hidden beast` number, since 5 + 5 + 5 + 7 + 4 + 563 + 9 + 68 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 534884601 + ... + 534885639.

It is an arithmetic number, because the mean of its divisors is an integer number (1749075328).

Almost surely, 2^555745639680 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 555745639680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1259334236160).

555745639680 is an abundant number, since it is smaller than the sum of its proper divisors (1962922832640).

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

555745639680 is a wasteful number, since it uses less digits than its factorization.

555745639680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157 (or 1134 counting only the distinct ones).

The product of its (nonzero) digits is 136080000, while the sum is 63.

The spelling of 555745639680 in words is "five hundred fifty-five billion, seven hundred forty-five million, six hundred thirty-nine thousand, six hundred eighty".