11532400155 has 24 divisors (see below), whose sum is σ = 19998997200. Its totient is φ = 6147689280.

The previous prime is 11532400153. The next prime is 11532400157. The reversal of 11532400155 is 55100423511.

It is an interprime number because it is at equal distance from previous prime (11532400153) and next prime (11532400157).

It is not a de Polignac number, because 11532400155 - 2¹ = 11532400153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11532400153) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 36496 + ... + 156194.

It is an arithmetic number, because the mean of its divisors is an integer number (833291550).

Almost surely, 2^11532400155 is an apocalyptic number.

11532400155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11532400155 is a deficient number, since it is larger than the sum of its proper divisors (8466597045).

11532400155 is a wasteful number, since it uses less digits than its factorization.

11532400155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121851 (or 121848 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 11532400155 its reverse (55100423511), we get a palindrome (66632823666).

The spelling of 11532400155 in words is "eleven billion, five hundred thirty-two million, four hundred thousand, one hundred fifty-five".