11506674003261 has 4 divisors (see below), whose sum is σ = 15342232004352. Its totient is φ = 7671116002172.

The previous prime is 11506674003259. The next prime is 11506674003263. The reversal of 11506674003261 is 16230047660511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (11506674003259) and next prime (11506674003263).

It is a cyclic number.

It is not a de Polignac number, because 11506674003261 - 2¹ = 11506674003259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11506674003263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1917779000541 + ... + 1917779000546.

It is an arithmetic number, because the mean of its divisors is an integer number (3835558001088).

Almost surely, 2^{11506674003261} is an apocalyptic number.

It is an amenable number.

11506674003261 is a deficient number, since it is larger than the sum of its proper divisors (3835558001091).

11506674003261 is an equidigital number, since it uses as much as digits as its factorization.

11506674003261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835558001090.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 11506674003261 in words is "eleven trillion, five hundred six billion, six hundred seventy-four million, three thousand, two hundred sixty-one".