11736574621 has 2 divisors, whose sum is σ = 11736574622. Its totient is φ = 11736574620.

The previous prime is 11736574523. The next prime is 11736574639. The reversal of 11736574621 is 12647563711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9457562500 + 2279012121 = 97250^2 + 47739^2 .

It is a cyclic number.

It is not a de Polignac number, because 11736574621 - 2¹⁵ = 11736541853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11736574651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5868287310 + 5868287311.

It is an arithmetic number, because the mean of its divisors is an integer number (5868287311).

Almost surely, 2^11736574621 is an apocalyptic number.

It is an amenable number.

11736574621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11736574621 is an equidigital number, since it uses as much as digits as its factorization.

11736574621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 43.

The spelling of 11736574621 in words is "eleven billion, seven hundred thirty-six million, five hundred seventy-four thousand, six hundred twenty-one".