11215400312405 has 8 divisors (see below), whose sum is σ = 13460752650912. Its totient is φ = 8970805399248.

The previous prime is 11215400312377. The next prime is 11215400312423. The reversal of 11215400312405 is 50421300451211.

It is a happy number.

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-11215400312405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189323759 + ... + 189382988.

It is an arithmetic number, because the mean of its divisors is an integer number (1682594081364).

Almost surely, 2^{11215400312405} is an apocalyptic number.

It is an amenable number.

11215400312405 is a deficient number, since it is larger than the sum of its proper divisors (2245352338507).

11215400312405 is an equidigital number, since it uses as much as digits as its factorization.

11215400312405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378712675.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 11215400312405 its reverse (50421300451211), we get a palindrome (61636700763616).

The spelling of 11215400312405 in words is "eleven trillion, two hundred fifteen billion, four hundred million, three hundred twelve thousand, four hundred five".