11313551551 has 2 divisors, whose sum is σ = 11313551552. Its totient is φ = 11313551550.

The previous prime is 11313551533. The next prime is 11313551597. The reversal of 11313551551 is 15515531311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11313551551 - 2¹³ = 11313543359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11313551651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656775775 + 5656775776.

It is an arithmetic number, because the mean of its divisors is an integer number (5656775776).

Almost surely, 2^11313551551 is an apocalyptic number.

11313551551 is a deficient number, since it is larger than the sum of its proper divisors (1).

11313551551 is an equidigital number, since it uses as much as digits as its factorization.

11313551551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5625, while the sum is 31.

It can be divided in two parts, 113135 and 51551, that multiplied together give a palindrome (5832222385).

The spelling of 11313551551 in words is "eleven billion, three hundred thirteen million, five hundred fifty-one thousand, five hundred fifty-one".