555508506240 has 512 divisors, whose sum is σ = 2027402265600. Its totient is φ = 143676997632.

The previous prime is 555508506239. The next prime is 555508506283. The reversal of 555508506240 is 42605805555.

555508506240 is a `hidden beast` number, since 5 + 5 + 550 + 8 + 50 + 6 + 2 + 40 = 666.

It is a super-2 number, since 2×555508506240² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 91771054 + ... + 91777106.

It is an arithmetic number, because the mean of its divisors is an integer number (3959770050).

Almost surely, 2^555508506240 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 555508506240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1013701132800).

555508506240 is an abundant number, since it is smaller than the sum of its proper divisors (1471893759360).

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

555508506240 is a wasteful number, since it uses less digits than its factorization.

555508506240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6241 (or 6223 counting only the distinct ones).

The product of its (nonzero) digits is 1200000, while the sum is 45.

The spelling of 555508506240 in words is "five hundred fifty-five billion, five hundred eight million, five hundred six thousand, two hundred forty".