7500661442118 has 256 divisors, whose sum is σ = 18576214272000. Its totient is φ = 2228740448256.

The previous prime is 7500661442089. The next prime is 7500661442137. The reversal of 7500661442118 is 8112441660057.

7500661442118 is a `hidden beast` number, since 7 + 5 + 0 + 0 + 6 + 614 + 4 + 21 + 1 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1497434398 + ... + 1497439406.

It is an arithmetic number, because the mean of its divisors is an integer number (72563337000).

Almost surely, 2^{7500661442118} is an apocalyptic number.

7500661442118 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7500661442118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9288107136000).

7500661442118 is an abundant number, since it is smaller than the sum of its proper divisors (11075552829882).

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

7500661442118 is a wasteful number, since it uses less digits than its factorization.

7500661442118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628 (or 5622 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 7500661442118 in words is "seven trillion, five hundred billion, six hundred sixty-one million, four hundred forty-two thousand, one hundred eighteen".