11554142620155 has 16 divisors (see below), whose sum is σ = 18495632931360. Its totient is φ = 6159207817728.

The previous prime is 11554142620147. The next prime is 11554142620211. The reversal of 11554142620155 is 55102624145511.

It is not a de Polignac number, because 11554142620155 - 2³ = 11554142620147 is a prime.

It is a super-2 number, since 2×11554142620155² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187566910 + ... + 187628499.

It is an arithmetic number, because the mean of its divisors is an integer number (1155977058210).

Almost surely, 2^{11554142620155} is an apocalyptic number.

11554142620155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11554142620155 is a deficient number, since it is larger than the sum of its proper divisors (6941490311205).

11554142620155 is a wasteful number, since it uses less digits than its factorization.

11554142620155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375197470.

The product of its (nonzero) digits is 240000, while the sum is 42.

Adding to 11554142620155 its reverse (55102624145511), we get a palindrome (66656766765666).

The spelling of 11554142620155 in words is "eleven trillion, five hundred fifty-four billion, one hundred forty-two million, six hundred twenty thousand, one hundred fifty-five".