75041016721 has 8 divisors (see below), whose sum is σ = 81881699904. Its totient is φ = 68203462320.

The previous prime is 75041016683. The next prime is 75041016727. The reversal of 75041016721 is 12761014057.

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

It is a cyclic number.

It is not a de Polignac number, because 75041016721 - 2⁷ = 75041016593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75041016727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 731901 + ... + 828106.

It is an arithmetic number, because the mean of its divisors is an integer number (10235212488).

Almost surely, 2^75041016721 is an apocalyptic number.

It is an amenable number.

75041016721 is a deficient number, since it is larger than the sum of its proper divisors (6840683183).

75041016721 is a wasteful number, since it uses less digits than its factorization.

75041016721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564391.

The product of its (nonzero) digits is 11760, while the sum is 34.

The spelling of 75041016721 in words is "seventy-five billion, forty-one million, sixteen thousand, seven hundred twenty-one".