75142661648 has 10 divisors (see below), whose sum is σ = 145588906974. Its totient is φ = 37571330816.

The previous prime is 75142661593. The next prime is 75142661663. The reversal of 75142661648 is 84616624157.

It can be written as a sum of positive squares in only one way, i.e., 73532084224 + 1610577424 = 271168^2 + 40132^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75142661596 and 75142661605.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2348208161 + ... + 2348208192.

Almost surely, 2^75142661648 is an apocalyptic number.

It is an amenable number.

75142661648 is a deficient number, since it is larger than the sum of its proper divisors (70446245326).

75142661648 is a wasteful number, since it uses less digits than its factorization.

75142661648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696416361 (or 4696416355 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 50.

The spelling of 75142661648 in words is "seventy-five billion, one hundred forty-two million, six hundred sixty-one thousand, six hundred forty-eight".