11670447890 has 16 divisors (see below), whose sum is σ = 21403162008. Its totient is φ = 4580100096.

The previous prime is 11670447869. The next prime is 11670447973. The reversal of 11670447890 is 9874407611.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11563346089 + 107101801 = 107533^2 + 10349^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11009327 + ... + 11010386.

Almost surely, 2^11670447890 is an apocalyptic number.

11670447890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11670447890 is a deficient number, since it is larger than the sum of its proper divisors (9732714118).

11670447890 is a wasteful number, since it uses less digits than its factorization.

11670447890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22019773.

The product of its (nonzero) digits is 338688, while the sum is 47.

The spelling of 11670447890 in words is "eleven billion, six hundred seventy million, four hundred forty-seven thousand, eight hundred ninety".