11355153421 has 2 divisors, whose sum is σ = 11355153422. Its totient is φ = 11355153420.

The previous prime is 11355153373. The next prime is 11355153437. The reversal of 11355153421 is 12435155311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7945761321 + 3409392100 = 89139^2 + 58390^2 .

It is a cyclic number.

It is not a de Polignac number, because 11355153421 - 2¹⁵ = 11355120653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11355150421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5677576710 + 5677576711.

It is an arithmetic number, because the mean of its divisors is an integer number (5677576711).

Almost surely, 2^11355153421 is an apocalyptic number.

It is an amenable number.

11355153421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11355153421 is an equidigital number, since it uses as much as digits as its factorization.

11355153421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9000, while the sum is 31.

The spelling of 11355153421 in words is "eleven billion, three hundred fifty-five million, one hundred fifty-three thousand, four hundred twenty-one".