75138278332 has 48 divisors (see below), whose sum is σ = 151101801760. Its totient is φ = 32403898368.

The previous prime is 75138278329. The next prime is 75138278339. The reversal of 75138278332 is 23387283157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75138278339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448773 + ... + 593020.

Almost surely, 2^75138278332 is an apocalyptic number.

It is an amenable number.

75138278332 is an abundant number, since it is smaller than the sum of its proper divisors (75963523428).

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

75138278332 is a wasteful number, since it uses less digits than its factorization.

75138278332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041902 (or 1041900 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 49.

The spelling of 75138278332 in words is "seventy-five billion, one hundred thirty-eight million, two hundred seventy-eight thousand, three hundred thirty-two".