10021542152939 has 2 divisors, whose sum is σ = 10021542152940. Its totient is φ = 10021542152938.

The previous prime is 10021542152891. The next prime is 10021542153079. The reversal of 10021542152939 is 93925124512001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10021542152939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10021542152939.

It is not a weakly prime, because it can be changed into another prime (10021542152339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010771076469 + 5010771076470.

It is an arithmetic number, because the mean of its divisors is an integer number (5010771076470).

Almost surely, 2^{10021542152939} is an apocalyptic number.

10021542152939 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021542152939 is an equidigital number, since it uses as much as digits as its factorization.

10021542152939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 10021542152939 in words is "ten trillion, twenty-one billion, five hundred forty-two million, one hundred fifty-two thousand, nine hundred thirty-nine".