10140061206581 has 2 divisors, whose sum is σ = 10140061206582. Its totient is φ = 10140061206580.

The previous prime is 10140061206577. The next prime is 10140061206703. The reversal of 10140061206581 is 18560216004101.

10140061206581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10039614046225 + 100447160356 = 3168535^2 + 316934^2 .

It is a cyclic number.

It is not a de Polignac number, because 10140061206581 - 2² = 10140061206577 is a prime.

It is a super-2 number, since 2×10140061206581² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10140061506581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5070030603290 + 5070030603291.

It is an arithmetic number, because the mean of its divisors is an integer number (5070030603291).

Almost surely, 2^{10140061206581} is an apocalyptic number.

It is an amenable number.

10140061206581 is a deficient number, since it is larger than the sum of its proper divisors (1).

10140061206581 is an equidigital number, since it uses as much as digits as its factorization.

10140061206581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 10140061206581 in words is "ten trillion, one hundred forty billion, sixty-one million, two hundred six thousand, five hundred eighty-one".