75631304637021 has 16 divisors (see below), whose sum is σ = 115322393022464. Its totient is φ = 43189879344624.

The previous prime is 75631304637011. The next prime is 75631304637047. The reversal of 75631304637021 is 12073640313657.

It is not a de Polignac number, because 75631304637021 - 2⁹ = 75631304636509 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 (75631304637011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1167009301 + ... + 1167074106.

It is an arithmetic number, because the mean of its divisors is an integer number (7207649563904).

Almost surely, 2^{75631304637021} is an apocalyptic number.

It is an amenable number.

75631304637021 is a deficient number, since it is larger than the sum of its proper divisors (39691088385443).

75631304637021 is a wasteful number, since it uses less digits than its factorization.

75631304637021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334084960.

The product of its (nonzero) digits is 1905120, while the sum is 48.

The spelling of 75631304637021 in words is "seventy-five trillion, six hundred thirty-one billion, three hundred four million, six hundred thirty-seven thousand, twenty-one".