1011664613263 has 16 divisors (see below), whose sum is σ = 1038632111136. Its totient is φ = 985010232960.

The previous prime is 1011664613249. The next prime is 1011664613293. The reversal of 1011664613263 is 3623164661101.

It is a cyclic number.

It is not a de Polignac number, because 1011664613263 - 2⁵ = 1011664613231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011664613233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4858456 + ... + 5062402.

It is an arithmetic number, because the mean of its divisors is an integer number (64914506946).

Almost surely, 2^{1011664613263} is an apocalyptic number.

1011664613263 is a deficient number, since it is larger than the sum of its proper divisors (26967497873).

1011664613263 is a wasteful number, since it uses less digits than its factorization.

1011664613263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204714.

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 1011664613263 in words is "one trillion, eleven billion, six hundred sixty-four million, six hundred thirteen thousand, two hundred sixty-three".