10156542001 has 2 divisors, whose sum is σ = 10156542002. Its totient is φ = 10156542000.

The previous prime is 10156541987. The next prime is 10156542031. The reversal of 10156542001 is 10024565101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5594890401 + 4561651600 = 74799^2 + 67540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10156542001 is a prime.

It is not a weakly prime, because it can be changed into another prime (10156542031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5078271000 + 5078271001.

It is an arithmetic number, because the mean of its divisors is an integer number (5078271001).

Almost surely, 2^10156542001 is an apocalyptic number.

It is an amenable number.

10156542001 is a deficient number, since it is larger than the sum of its proper divisors (1).

10156542001 is an equidigital number, since it uses as much as digits as its factorization.

10156542001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 10156542001 in words is "ten billion, one hundred fifty-six million, five hundred forty-two thousand, one".