75727448842 has 4 divisors (see below), whose sum is σ = 113591173266. Its totient is φ = 37863724420.

The previous prime is 75727448813. The next prime is 75727448843. The reversal of 75727448842 is 24884472757.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24884472757 = 541 ⋅45997177.

It can be written as a sum of positive squares in only one way, i.e., 58811585121 + 16915863721 = 242511^2 + 130061^2 .

It is not an unprimeable number, because it can be changed into a prime (75727448843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18931862209 + ... + 18931862212.

Almost surely, 2^75727448842 is an apocalyptic number.

75727448842 is a deficient number, since it is larger than the sum of its proper divisors (37863724424).

75727448842 is a wasteful number, since it uses less digits than its factorization.

75727448842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37863724423.

The product of its digits is 28098560, while the sum is 58.

The spelling of 75727448842 in words is "seventy-five billion, seven hundred twenty-seven million, four hundred forty-eight thousand, eight hundred forty-two".