11641252155 has 16 divisors (see below), whose sum is σ = 20058773280. Its totient is φ = 5731077888.

The previous prime is 11641252127. The next prime is 11641252159. The reversal of 11641252155 is 55125214611.

It is a happy number.

It is not a de Polignac number, because 11641252155 - 2³² = 7346284859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11641252159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29849170 + ... + 29849559.

It is an arithmetic number, because the mean of its divisors is an integer number (1253673330).

Almost surely, 2^11641252155 is an apocalyptic number.

11641252155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11641252155 is a deficient number, since it is larger than the sum of its proper divisors (8417521125).

11641252155 is a wasteful number, since it uses less digits than its factorization.

11641252155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59698750.

The product of its digits is 12000, while the sum is 33.

Adding to 11641252155 its reverse (55125214611), we get a palindrome (66766466766).

The spelling of 11641252155 in words is "eleven billion, six hundred forty-one million, two hundred fifty-two thousand, one hundred fifty-five".