11725821342 has 24 divisors (see below), whose sum is σ = 25464909600. Its totient is φ = 3899535840.

The previous prime is 11725821313. The next prime is 11725821347. The reversal of 11725821342 is 24312852711.

11725821342 is a `hidden beast` number, since 1 + 1 + 72 + 582 + 1 + 3 + 4 + 2 = 666.

It is a super-2 number, since 2×11725821342² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11725821297 and 11725821306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11725821347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 747967 + ... + 763482.

It is an arithmetic number, because the mean of its divisors is an integer number (1061037900).

Almost surely, 2^11725821342 is an apocalyptic number.

11725821342 is an abundant number, since it is smaller than the sum of its proper divisors (13739088258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11725821342 is a wasteful number, since it uses less digits than its factorization.

11725821342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511888 (or 1511885 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The spelling of 11725821342 in words is "eleven billion, seven hundred twenty-five million, eight hundred twenty-one thousand, three hundred forty-two".