11621755442 has 24 divisors (see below), whose sum is σ = 19071893232. Its totient is φ = 5267526800.

The previous prime is 11621755391. The next prime is 11621755477. The reversal of 11621755442 is 24455712611.

It is a junction number, because it is equal to n+sod(n) for n = 11621755396 and 11621755405.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3327317 + ... + 3330807.

It is an arithmetic number, because the mean of its divisors is an integer number (794662218).

Almost surely, 2^11621755442 is an apocalyptic number.

11621755442 is a deficient number, since it is larger than the sum of its proper divisors (7450137790).

11621755442 is an equidigital number, since it uses as much as digits as its factorization.

11621755442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4282 (or 3893 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The spelling of 11621755442 in words is "eleven billion, six hundred twenty-one million, seven hundred fifty-five thousand, four hundred forty-two".