10381946940693 has 10 divisors (see below), whose sum is σ = 15508834318934. Its totient is φ = 6921297960408.

The previous prime is 10381946940691. The next prime is 10381946940733. The reversal of 10381946940693 is 39604964918301.

10381946940693 is a `hidden beast` number, since 1 + 0 + 3 + 81 + 9 + 4 + 69 + 406 + 93 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9667479092049 + 714467848644 = 3109257^2 + 845262^2 .

It is not a de Polignac number, because 10381946940693 - 2¹ = 10381946940691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10381946940693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10381946940691) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 64086092146 + ... + 64086092307.

Almost surely, 2^{10381946940693} is an apocalyptic number.

It is an amenable number.

10381946940693 is a deficient number, since it is larger than the sum of its proper divisors (5126887378241).

10381946940693 is an equidigital number, since it uses as much as digits as its factorization.

10381946940693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128172184465 (or 128172184456 counting only the distinct ones).

The product of its (nonzero) digits is 30233088, while the sum is 63.

The spelling of 10381946940693 in words is "ten trillion, three hundred eighty-one billion, nine hundred forty-six million, nine hundred forty thousand, six hundred ninety-three".