1001099994623 has 2 divisors, whose sum is σ = 1001099994624. Its totient is φ = 1001099994622.

The previous prime is 1001099994611. The next prime is 1001099994737. The reversal of 1001099994623 is 3264999901001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001099994623 - 2³⁴ = 983920125439 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001099990623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500549997311 + 500549997312.

It is an arithmetic number, because the mean of its divisors is an integer number (500549997312).

Almost surely, 2^{1001099994623} is an apocalyptic number.

1001099994623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001099994623 is an equidigital number, since it uses as much as digits as its factorization.

1001099994623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 944784, while the sum is 53.

The spelling of 1001099994623 in words is "one trillion, one billion, ninety-nine million, nine hundred ninety-four thousand, six hundred twenty-three".