11551520404454 has 32 divisors (see below), whose sum is σ = 18760046808960. Its totient is φ = 5313772776448.

The previous prime is 11551520404421. The next prime is 11551520404481. The reversal of 11551520404454 is 45440402515511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3174917 + ... + 5760480.

It is an arithmetic number, because the mean of its divisors is an integer number (586251462780).

Almost surely, 2^{11551520404454} is an apocalyptic number.

11551520404454 is a deficient number, since it is larger than the sum of its proper divisors (7208526404506).

11551520404454 is a wasteful number, since it uses less digits than its factorization.

11551520404454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8936272.

The product of its (nonzero) digits is 320000, while the sum is 41.

Adding to 11551520404454 its reverse (45440402515511), we get a palindrome (56991922919965).

The spelling of 11551520404454 in words is "eleven trillion, five hundred fifty-one billion, five hundred twenty million, four hundred four thousand, four hundred fifty-four".