11401513155555 has 32 divisors (see below), whose sum is σ = 19096777589760. Its totient is φ = 5797721719680.

The previous prime is 11401513155551. The next prime is 11401513155607. The reversal of 11401513155555 is 55555131510411.

It is not a de Polignac number, because 11401513155555 - 2² = 11401513155551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11401513155551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53024320 + ... + 53238909.

It is an arithmetic number, because the mean of its divisors is an integer number (596774299680).

Almost surely, 2^{11401513155555} is an apocalyptic number.

11401513155555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11401513155555 is a deficient number, since it is larger than the sum of its proper divisors (7695264434205).

11401513155555 is a wasteful number, since it uses less digits than its factorization.

11401513155555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106263571.

The product of its (nonzero) digits is 187500, while the sum is 42.

Adding to 11401513155555 its reverse (55555131510411), we get a palindrome (66956644665966).

The spelling of 11401513155555 in words is "eleven trillion, four hundred one billion, five hundred thirteen million, one hundred fifty-five thousand, five hundred fifty-five".