11621364155 has 16 divisors (see below), whose sum is σ = 15185815200. Its totient is φ = 8504052480.

The previous prime is 11621364143. The next prime is 11621364163. The reversal of 11621364155 is 55146312611.

It is not a de Polignac number, because 11621364155 - 2⁸ = 11621363899 is a prime.

It is a super-2 number, since 2×11621364155² (a number of 21 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, 2106386 + ... + 2111895.

It is an arithmetic number, because the mean of its divisors is an integer number (949113450).

Almost surely, 2^11621364155 is an apocalyptic number.

11621364155 is a deficient number, since it is larger than the sum of its proper divisors (3564451045).

11621364155 is a wasteful number, since it uses less digits than its factorization.

11621364155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4218334.

The product of its digits is 21600, while the sum is 35.

Adding to 11621364155 its reverse (55146312611), we get a palindrome (66767676766).

The spelling of 11621364155 in words is "eleven billion, six hundred twenty-one million, three hundred sixty-four thousand, one hundred fifty-five".