11819379451 has 16 divisors (see below), whose sum is σ = 12943399680. Its totient is φ = 10703702880.

The previous prime is 11819379437. The next prime is 11819379469. The reversal of 11819379451 is 15497391811.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11819379451 - 2¹³ = 11819371259 is a prime.

It is a super-2 number, since 2×11819379451² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11819379395 and 11819379404.

It is not an unprimeable number, because it can be changed into a prime (11819373451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3625060 + ... + 3628318.

It is an arithmetic number, because the mean of its divisors is an integer number (808962480).

Almost surely, 2^11819379451 is an apocalyptic number.

11819379451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11819379451 is a deficient number, since it is larger than the sum of its proper divisors (1124020229).

11819379451 is a wasteful number, since it uses less digits than its factorization.

11819379451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4434.

The product of its digits is 272160, while the sum is 49.

The spelling of 11819379451 in words is "eleven billion, eight hundred nineteen million, three hundred seventy-nine thousand, four hundred fifty-one".