75518055612 has 72 divisors (see below), whose sum is σ = 192575292000. Its totient is φ = 24951535488.

The previous prime is 75518055589. The next prime is 75518055619. The reversal of 75518055612 is 21655081557.

75518055612 is a `hidden beast` number, since 7 + 5 + 5 + 1 + 80 + 5 + 561 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75518055619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2597814 + ... + 2626722.

Almost surely, 2^75518055612 is an apocalyptic number.

It is an amenable number.

75518055612 is an abundant number, since it is smaller than the sum of its proper divisors (117057236388).

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

75518055612 is a wasteful number, since it uses less digits than its factorization.

75518055612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29555 (or 29550 counting only the distinct ones).

The product of its (nonzero) digits is 420000, while the sum is 45.

The spelling of 75518055612 in words is "seventy-five billion, five hundred eighteen million, fifty-five thousand, six hundred twelve".