11172774450 has 48 divisors (see below), whose sum is σ = 27810827136. Its totient is φ = 2968401600.

The previous prime is 11172774433. The next prime is 11172774467. The reversal of 11172774450 is 5447727111.

It is an interprime number because it is at equal distance from previous prime (11172774433) and next prime (11172774467).

It is a junction number, because it is equal to n+sod(n) for n = 11172774399 and 11172774408.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96777 + ... + 178076.

It is an arithmetic number, because the mean of its divisors is an integer number (579392232).

Almost surely, 2^11172774450 is an apocalyptic number.

11172774450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11172774450 is an abundant number, since it is smaller than the sum of its proper divisors (16638052686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11172774450 is a wasteful number, since it uses less digits than its factorization.

11172774450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275139 (or 275134 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 39.

The spelling of 11172774450 in words is "eleven billion, one hundred seventy-two million, seven hundred seventy-four thousand, four hundred fifty".