75103115021 has 12 divisors (see below), whose sum is σ = 86140550496. Its totient is φ = 65307054120.

The previous prime is 75103114973. The next prime is 75103115033. The reversal of 75103115021 is 12051130157.

It is a de Polignac number, because none of the positive numbers 2^k-75103115021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75103195021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13490411 + ... + 13495976.

It is an arithmetic number, because the mean of its divisors is an integer number (7178379208).

Almost surely, 2^75103115021 is an apocalyptic number.

It is an amenable number.

75103115021 is a deficient number, since it is larger than the sum of its proper divisors (11037435475).

75103115021 is a wasteful number, since it uses less digits than its factorization.

75103115021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26986432 (or 26986421 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 26.

Adding to 75103115021 its reverse (12051130157), we get a palindrome (87154245178).

The spelling of 75103115021 in words is "seventy-five billion, one hundred three million, one hundred fifteen thousand, twenty-one".