11615454046505 has 4 divisors (see below), whose sum is σ = 13938544855812. Its totient is φ = 9292363237200.

The previous prime is 11615454046459. The next prime is 11615454046531. The reversal of 11615454046505 is 50564045451611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4303118764816 + 7312335281689 = 2074396^2 + 2704133^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11615454046505 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11615454046505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1161545404646 + ... + 1161545404655.

It is an arithmetic number, because the mean of its divisors is an integer number (3484636213953).

Almost surely, 2^{11615454046505} is an apocalyptic number.

It is an amenable number.

11615454046505 is a deficient number, since it is larger than the sum of its proper divisors (2323090809307).

11615454046505 is an equidigital number, since it uses as much as digits as its factorization.

11615454046505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323090809306.

The product of its (nonzero) digits is 1440000, while the sum is 47.

The spelling of 11615454046505 in words is "eleven trillion, six hundred fifteen billion, four hundred fifty-four million, forty-six thousand, five hundred five".