536778616545 has 12 divisors (see below), whose sum is σ = 930416268756. Its totient is φ = 286281928800.

The previous prime is 536778616541. The next prime is 536778616553. The reversal of 536778616545 is 545616877635.

536778616545 is a `hidden beast` number, since 5 + 3 + 6 + 7 + 7 + 8 + 616 + 5 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 287374261329 + 249404355216 = 536073^2 + 499404^2 .

It is not a de Polignac number, because 536778616545 - 2² = 536778616541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (536778616541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5964206806 + ... + 5964206895.

It is an arithmetic number, because the mean of its divisors is an integer number (77534689063).

Almost surely, 2^536778616545 is an apocalyptic number.

It is an amenable number.

536778616545 is a deficient number, since it is larger than the sum of its proper divisors (393637652211).

536778616545 is a wasteful number, since it uses less digits than its factorization.

536778616545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11928413712 (or 11928413709 counting only the distinct ones).

The product of its digits is 127008000, while the sum is 63.

The spelling of 536778616545 in words is "five hundred thirty-six billion, seven hundred seventy-eight million, six hundred sixteen thousand, five hundred forty-five".