1084778771361 has 8 divisors (see below), whose sum is σ = 1509257421120. Its totient is φ = 691742984592.

The previous prime is 1084778771359. The next prime is 1084778771429. The reversal of 1084778771361 is 1631778774801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1084778771361 - 2¹ = 1084778771359 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1084778771295 and 1084778771304.

It is not an unprimeable number, because it can be changed into a prime (1084778771261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7860715666 + ... + 7860715803.

It is an arithmetic number, because the mean of its divisors is an integer number (188657177640).

Almost surely, 2^{1084778771361} is an apocalyptic number.

It is an amenable number.

1084778771361 is a deficient number, since it is larger than the sum of its proper divisors (424478649759).

1084778771361 is a wasteful number, since it uses less digits than its factorization.

1084778771361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15721431495.

The product of its (nonzero) digits is 11063808, while the sum is 60.

The spelling of 1084778771361 in words is "one trillion, eighty-four billion, seven hundred seventy-eight million, seven hundred seventy-one thousand, three hundred sixty-one".