10642633042981 has 2 divisors, whose sum is σ = 10642633042982. Its totient is φ = 10642633042980.

The previous prime is 10642633042969. The next prime is 10642633043117. The reversal of 10642633042981 is 18924033624601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10064058312100 + 578574730881 = 3172390^2 + 760641^2 .

It is a cyclic number.

It is not a de Polignac number, because 10642633042981 - 2⁵ = 10642633042949 is a prime.

It is a super-3 number, since 3×10642633042981³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10642633042081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5321316521490 + 5321316521491.

It is an arithmetic number, because the mean of its divisors is an integer number (5321316521491).

Almost surely, 2^{10642633042981} is an apocalyptic number.

It is an amenable number.

10642633042981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10642633042981 is an equidigital number, since it uses as much as digits as its factorization.

10642633042981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 10642633042981 in words is "ten trillion, six hundred forty-two billion, six hundred thirty-three million, forty-two thousand, nine hundred eighty-one".