1011506665001 has 32 divisors (see below), whose sum is σ = 1205287161600. Its totient is φ = 830764636416.

The previous prime is 1011506664991. The next prime is 1011506665021. The reversal of 1011506665001 is 1005666051101.

It is a cyclic number.

It is not a de Polignac number, because 1011506665001 - 2⁶ = 1011506664937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011506665021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127245575 + ... + 127253523.

It is an arithmetic number, because the mean of its divisors is an integer number (37665223800).

Almost surely, 2^{1011506665001} is an apocalyptic number.

It is an amenable number.

1011506665001 is a deficient number, since it is larger than the sum of its proper divisors (193780496599).

1011506665001 is an equidigital number, since it uses as much as digits as its factorization.

1011506665001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15393.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 1011506665001 in words is "one trillion, eleven billion, five hundred six million, six hundred sixty-five thousand, one".