11519382421 has 8 divisors (see below), whose sum is σ = 11796549120. Its totient is φ = 11243552208.

The previous prime is 11519382409. The next prime is 11519382437. The reversal of 11519382421 is 12428391511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11519382421 - 2¹⁹ = 11518858133 is a prime.

It is a super-2 number, since 2×11519382421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11519382401) 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, 316666 + ... + 351163.

It is an arithmetic number, because the mean of its divisors is an integer number (1474568640).

Almost surely, 2^11519382421 is an apocalyptic number.

It is an amenable number.

11519382421 is a deficient number, since it is larger than the sum of its proper divisors (277166699).

11519382421 is an equidigital number, since it uses as much as digits as its factorization.

11519382421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668243.

The product of its digits is 17280, while the sum is 37.

The spelling of 11519382421 in words is "eleven billion, five hundred nineteen million, three hundred eighty-two thousand, four hundred twenty-one".