5551636511 has 2 divisors, whose sum is σ = 5551636512. Its totient is φ = 5551636510.

The previous prime is 5551636507. The next prime is 5551636553. The reversal of 5551636511 is 1156361555.

5551636511 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5551636511 - 2² = 5551636507 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5551638511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775818255 + 2775818256.

It is an arithmetic number, because the mean of its divisors is an integer number (2775818256).

Almost surely, 2^5551636511 is an apocalyptic number.

5551636511 is a deficient number, since it is larger than the sum of its proper divisors (1).

5551636511 is an equidigital number, since it uses as much as digits as its factorization.

5551636511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67500, while the sum is 38.

The square root of 5551636511 is about 74509.3048618761. The cubic root of 5551636511 is about 1770.6810567103.

The spelling of 5551636511 in words is "five billion, five hundred fifty-one million, six hundred thirty-six thousand, five hundred eleven".