11621782994 has 12 divisors (see below), whose sum is σ = 17482573626. Its totient is φ = 5794305792.

The previous prime is 11621782987. The next prime is 11621783003. The reversal of 11621782994 is 49928712611.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 7719906769 + 3901876225 = 87863^2 + 62465^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 225902 + ... + 272534.

Almost surely, 2^11621782994 is an apocalyptic number.

11621782994 is a deficient number, since it is larger than the sum of its proper divisors (5860790632).

11621782994 is an frugal number, since it uses more digits than its factorization.

11621782994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47341 (or 46988 counting only the distinct ones).

The product of its digits is 435456, while the sum is 50.

The spelling of 11621782994 in words is "eleven billion, six hundred twenty-one million, seven hundred eighty-two thousand, nine hundred ninety-four".