75530011998 has 64 divisors (see below), whose sum is σ = 178781271552. Its totient is φ = 20825700480.

The previous prime is 75530011993. The next prime is 75530012021. The reversal of 75530011998 is 89911003557.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75530011993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142336 + ... + 413907.

It is an arithmetic number, because the mean of its divisors is an integer number (2793457368).

Almost surely, 2^75530011998 is an apocalyptic number.

75530011998 is an abundant number, since it is smaller than the sum of its proper divisors (103251259554).

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

75530011998 is a wasteful number, since it uses less digits than its factorization.

75530011998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556369.

The product of its (nonzero) digits is 340200, while the sum is 48.

The spelling of 75530011998 in words is "seventy-five billion, five hundred thirty million, eleven thousand, nine hundred ninety-eight".