11626074721 has 4 divisors (see below), whose sum is σ = 11728960452. Its totient is φ = 11523188992.

The previous prime is 11626074689. The next prime is 11626074743. The reversal of 11626074721 is 12747062611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12747062611 = 37529 ⋅339659.

It can be written as a sum of positive squares in 2 ways, for example, as 1673219025 + 9952855696 = 40905^2 + 99764^2 .

It is a cyclic number.

It is not a de Polignac number, because 11626074721 - 2⁵ = 11626074689 is a prime.

It is a super-2 number, since 2×11626074721² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11656074721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51442696 + ... + 51442921.

It is an arithmetic number, because the mean of its divisors is an integer number (2932240113).

Almost surely, 2^11626074721 is an apocalyptic number.

It is an amenable number.

11626074721 is a deficient number, since it is larger than the sum of its proper divisors (102885731).

11626074721 is a wasteful number, since it uses less digits than its factorization.

11626074721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102885730.

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 11626074721 in words is "eleven billion, six hundred twenty-six million, seventy-four thousand, seven hundred twenty-one".