1011665553013 has 8 divisors (see below), whose sum is σ = 1013994459576. Its totient is φ = 1009339032000.

The previous prime is 1011665553007. The next prime is 1011665553043. The reversal of 1011665553013 is 3103555661101.

It can be written as a sum of positive squares in 4 ways, for example, as 42775753329 + 968889799684 = 206823^2 + 984322^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1011665553013 - 2⁹ = 1011665552501 is a prime.

It is a super-2 number, since 2×1011665553013² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011665553043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254143 + ... + 1444963.

It is an arithmetic number, because the mean of its divisors is an integer number (126749307447).

Almost surely, 2^{1011665553013} is an apocalyptic number.

It is an amenable number.

1011665553013 is a deficient number, since it is larger than the sum of its proper divisors (2328906563).

1011665553013 is a wasteful number, since it uses less digits than its factorization.

1011665553013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192775.

The product of its (nonzero) digits is 40500, while the sum is 37.

The spelling of 1011665553013 in words is "one trillion, eleven billion, six hundred sixty-five million, five hundred fifty-three thousand, thirteen".