10021540525487 has 2 divisors, whose sum is σ = 10021540525488. Its totient is φ = 10021540525486.

The previous prime is 10021540525481. The next prime is 10021540525511. The reversal of 10021540525487 is 78452504512001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10021540525487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10021540525481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010770262743 + 5010770262744.

It is an arithmetic number, because the mean of its divisors is an integer number (5010770262744).

Almost surely, 2^{10021540525487} is an apocalyptic number.

10021540525487 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021540525487 is an equidigital number, since it uses as much as digits as its factorization.

10021540525487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448000, while the sum is 44.

The spelling of 10021540525487 in words is "ten trillion, twenty-one billion, five hundred forty million, five hundred twenty-five thousand, four hundred eighty-seven".