1093911521641 has 8 divisors (see below), whose sum is σ = 1094794982568. Its totient is φ = 1093028352000.

The previous prime is 1093911521623. The next prime is 1093911521653. The reversal of 1093911521641 is 1461251193901.

It can be written as a sum of positive squares in 4 ways, for example, as 187312377616 + 906599144025 = 432796^2 + 952155^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1093911521641 - 2³¹ = 1091764037993 is a prime.

It is a super-2 number, since 2×1093911521641² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1093911521611) 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, 7779801 + ... + 7919161.

It is an arithmetic number, because the mean of its divisors is an integer number (136849372821).

Almost surely, 2^{1093911521641} is an apocalyptic number.

It is an amenable number.

1093911521641 is a deficient number, since it is larger than the sum of its proper divisors (883460927).

1093911521641 is a wasteful number, since it uses less digits than its factorization.

1093911521641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145643.

The product of its (nonzero) digits is 58320, while the sum is 43.

The spelling of 1093911521641 in words is "one trillion, ninety-three billion, nine hundred eleven million, five hundred twenty-one thousand, six hundred forty-one".