75338127978 has 32 divisors (see below), whose sum is σ = 157328775360. Its totient is φ = 24020142720.

The previous prime is 75338127973. The next prime is 75338128001. The reversal of 75338127978 is 87972183357.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (75338127973) 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, 2004643 + ... + 2041878.

It is an arithmetic number, because the mean of its divisors is an integer number (4916524230).

Almost surely, 2^75338127978 is an apocalyptic number.

75338127978 is an abundant number, since it is smaller than the sum of its proper divisors (81990647382).

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

75338127978 is a wasteful number, since it uses less digits than its factorization.

75338127978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4046662.

The product of its digits is 17781120, while the sum is 60.

The spelling of 75338127978 in words is "seventy-five billion, three hundred thirty-eight million, one hundred twenty-seven thousand, nine hundred seventy-eight".