1011332540405 has 8 divisors (see below), whose sum is σ = 1323926234784. Its totient is φ = 735514574800.

The previous prime is 1011332540401. The next prime is 1011332540467. The reversal of 1011332540405 is 5040452331101.

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

It is not a de Polignac number, because 1011332540405 - 2² = 1011332540401 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 (1011332540401) 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, 9193932131 + ... + 9193932240.

It is an arithmetic number, because the mean of its divisors is an integer number (165490779348).

Almost surely, 2^{1011332540405} is an apocalyptic number.

It is an amenable number.

1011332540405 is a deficient number, since it is larger than the sum of its proper divisors (312593694379).

1011332540405 is a wasteful number, since it uses less digits than its factorization.

1011332540405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18387864387.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 1011332540405 its reverse (5040452331101), we get a palindrome (6051784871506).

The spelling of 1011332540405 in words is "one trillion, eleven billion, three hundred thirty-two million, five hundred forty thousand, four hundred five".