1091064421246 has 16 divisors (see below), whose sum is σ = 1638800778960. Its totient is φ = 544797601920.

The previous prime is 1091064421243. The next prime is 1091064421247. The reversal of 1091064421246 is 6421244601901.

It is a junction number, because it is equal to n+sod(n) for n = 1091064421199 and 1091064421208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091064421243) 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, 39602236 + ... + 39629776.

It is an arithmetic number, because the mean of its divisors is an integer number (102425048685).

Almost surely, 2^{1091064421246} is an apocalyptic number.

1091064421246 is a deficient number, since it is larger than the sum of its proper divisors (547736357714).

1091064421246 is a wasteful number, since it uses less digits than its factorization.

1091064421246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53499.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 1091064421246 in words is "one trillion, ninety-one billion, sixty-four million, four hundred twenty-one thousand, two hundred forty-six".