1073789213261 has 8 divisors (see below), whose sum is σ = 1076061841848. Its totient is φ = 1071518976000.

The previous prime is 1073789213201. The next prime is 1073789213291. The reversal of 1073789213261 is 1623129873701.

It can be written as a sum of positive squares in 4 ways, for example, as 182405868100 + 891383345161 = 427090^2 + 944131^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1073789213261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1073789213201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302621 + ... + 1496381.

It is an arithmetic number, because the mean of its divisors is an integer number (134507730231).

Almost surely, 2^{1073789213261} is an apocalyptic number.

It is an amenable number.

1073789213261 is a deficient number, since it is larger than the sum of its proper divisors (2272628587).

1073789213261 is a wasteful number, since it uses less digits than its factorization.

1073789213261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195663.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 1073789213261 in words is "one trillion, seventy-three billion, seven hundred eighty-nine million, two hundred thirteen thousand, two hundred sixty-one".