75778139253 has 8 divisors (see below), whose sum is σ = 101073653728. Its totient is φ = 50500692144.

The previous prime is 75778139237. The next prime is 75778139273. The reversal of 75778139253 is 35293187757.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 75778139253 - 2⁴ = 75778139237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75778139193 and 75778139202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75778139273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4507051 + ... + 4523832.

It is an arithmetic number, because the mean of its divisors is an integer number (12634206716).

Almost surely, 2^75778139253 is an apocalyptic number.

It is an amenable number.

75778139253 is a deficient number, since it is larger than the sum of its proper divisors (25295514475).

75778139253 is a wasteful number, since it uses less digits than its factorization.

75778139253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9033683.

The product of its digits is 11113200, while the sum is 57.

The spelling of 75778139253 in words is "seventy-five billion, seven hundred seventy-eight million, one hundred thirty-nine thousand, two hundred fifty-three".