54787736749 has 2 divisors, whose sum is σ = 54787736750. Its totient is φ = 54787736748.

The previous prime is 54787736737. The next prime is 54787736777. The reversal of 54787736749 is 94763778745.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40461322500 + 14326414249 = 201150^2 + 119693^2 .

It is a cyclic number.

It is not a de Polignac number, because 54787736749 - 2¹³ = 54787728557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54787731749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27393868374 + 27393868375.

It is an arithmetic number, because the mean of its divisors is an integer number (27393868375).

Almost surely, 2^54787736749 is an apocalyptic number.

It is an amenable number.

54787736749 is a deficient number, since it is larger than the sum of its proper divisors (1).

54787736749 is an equidigital number, since it uses as much as digits as its factorization.

54787736749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248935680, while the sum is 67.

The spelling of 54787736749 in words is "fifty-four billion, seven hundred eighty-seven million, seven hundred thirty-six thousand, seven hundred forty-nine".