11621556722 has 16 divisors (see below), whose sum is σ = 17549687232. Its totient is φ = 5771703600.

The previous prime is 11621556691. The next prime is 11621556733. The reversal of 11621556722 is 22765512611.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592472 + ... + 611772.

It is an arithmetic number, because the mean of its divisors is an integer number (1096855452).

Almost surely, 2^11621556722 is an apocalyptic number.

11621556722 is a deficient number, since it is larger than the sum of its proper divisors (5928130510).

11621556722 is a wasteful number, since it uses less digits than its factorization.

11621556722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21313.

The product of its digits is 50400, while the sum is 38.

The spelling of 11621556722 in words is "eleven billion, six hundred twenty-one million, five hundred fifty-six thousand, seven hundred twenty-two".