10021872591 has 6 divisors (see below), whose sum is σ = 14476038200. Its totient is φ = 6681248388.

The previous prime is 10021872551. The next prime is 10021872643. The reversal of 10021872591 is 19527812001.

It is a happy number.

It is not a de Polignac number, because 10021872591 - 2¹⁵ = 10021839823 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 (10021872551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 556770691 + ... + 556770708.

Almost surely, 2^10021872591 is an apocalyptic number.

10021872591 is a deficient number, since it is larger than the sum of its proper divisors (4454165609).

10021872591 is a wasteful number, since it uses less digits than its factorization.

10021872591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113541405 (or 1113541402 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The spelling of 10021872591 in words is "ten billion, twenty-one million, eight hundred seventy-two thousand, five hundred ninety-one".