5365507773781 has 2 divisors, whose sum is σ = 5365507773782. Its totient is φ = 5365507773780.

The previous prime is 5365507773761. The next prime is 5365507773803. The reversal of 5365507773781 is 1873777055635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3990669447556 + 1374838326225 = 1997666^2 + 1172535^2 .

It is a cyclic number.

It is not a de Polignac number, because 5365507773781 - 2¹³ = 5365507765589 is a prime.

It is a super-2 number, since 2×5365507773781² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5365507773721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2682753886890 + 2682753886891.

It is an arithmetic number, because the mean of its divisors is an integer number (2682753886891).

Almost surely, 2^{5365507773781} is an apocalyptic number.

It is an amenable number.

5365507773781 is a deficient number, since it is larger than the sum of its proper divisors (1).

5365507773781 is an equidigital number, since it uses as much as digits as its factorization.

5365507773781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129654000, while the sum is 64.

The spelling of 5365507773781 in words is "five trillion, three hundred sixty-five billion, five hundred seven million, seven hundred seventy-three thousand, seven hundred eighty-one".