75071214821 has 32 divisors (see below), whose sum is σ = 82624665600. Its totient is φ = 68135934720.

The previous prime is 75071214817. The next prime is 75071214839. The reversal of 75071214821 is 12841217057.

It is not a de Polignac number, because 75071214821 - 2² = 75071214817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75071214851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54676091 + ... + 54677463.

It is an arithmetic number, because the mean of its divisors is an integer number (2582020800).

Almost surely, 2^75071214821 is an apocalyptic number.

It is an amenable number.

75071214821 is a deficient number, since it is larger than the sum of its proper divisors (7553450779).

75071214821 is a wasteful number, since it uses less digits than its factorization.

75071214821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814 (or 1780 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 38.

The spelling of 75071214821 in words is "seventy-five billion, seventy-one million, two hundred fourteen thousand, eight hundred twenty-one".