10001011099966 has 4 divisors (see below), whose sum is σ = 15001516649952. Its totient is φ = 5000505549982.

The previous prime is 10001011099913. The next prime is 10001011099969. The reversal of 10001011099966 is 66999011010001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001011099969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500252774990 + ... + 2500252774993.

It is an arithmetic number, because the mean of its divisors is an integer number (3750379162488).

Almost surely, 2^{10001011099966} is an apocalyptic number.

10001011099966 is a deficient number, since it is larger than the sum of its proper divisors (5000505549986).

10001011099966 is an equidigital number, since it uses as much as digits as its factorization.

10001011099966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000505549985.

The product of its (nonzero) digits is 26244, while the sum is 43.

The spelling of 10001011099966 in words is "ten trillion, one billion, eleven million, ninety-nine thousand, nine hundred sixty-six".