11177200155 has 48 divisors (see below), whose sum is σ = 20335019040. Its totient is φ = 5232353280.

The previous prime is 11177200121. The next prime is 11177200169. The reversal of 11177200155 is 55100277111.

It is not a de Polignac number, because 11177200155 - 2¹¹ = 11177198107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53542 + ... + 158811.

It is an arithmetic number, because the mean of its divisors is an integer number (423646230).

Almost surely, 2^11177200155 is an apocalyptic number.

11177200155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11177200155 is a deficient number, since it is larger than the sum of its proper divisors (9157818885).

11177200155 is a wasteful number, since it uses less digits than its factorization.

11177200155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212412 (or 212401 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 30.

Adding to 11177200155 its reverse (55100277111), we get a palindrome (66277477266).

The spelling of 11177200155 in words is "eleven billion, one hundred seventy-seven million, two hundred thousand, one hundred fifty-five".