11621220670 has 16 divisors (see below), whose sum is σ = 20919637440. Its totient is φ = 4648168224.

The previous prime is 11621220647. The next prime is 11621220671. The reversal of 11621220670 is 7602212611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621220671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160219 + ... + 221161.

It is an arithmetic number, because the mean of its divisors is an integer number (1307477340).

Almost surely, 2^11621220670 is an apocalyptic number.

11621220670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11621220670 is a deficient number, since it is larger than the sum of its proper divisors (9298416770).

11621220670 is a wasteful number, since it uses less digits than its factorization.

11621220670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80019.

The product of its (nonzero) digits is 2016, while the sum is 28.

The spelling of 11621220670 in words is "eleven billion, six hundred twenty-one million, two hundred twenty thousand, six hundred seventy".