11726431140 has 24 divisors (see below), whose sum is σ = 32834007360. Its totient is φ = 3127048288.

The previous prime is 11726431111. The next prime is 11726431141. The reversal of 11726431140 is 4113462711.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 11726431098 and 11726431107.

It is not an unprimeable number, because it can be changed into a prime (11726431141) 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, 97720200 + ... + 97720319.

It is an arithmetic number, because the mean of its divisors is an integer number (1368083640).

Almost surely, 2^11726431140 is an apocalyptic number.

11726431140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11726431140 is an abundant number, since it is smaller than the sum of its proper divisors (21107576220).

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

11726431140 is a wasteful number, since it uses less digits than its factorization.

11726431140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195440531 (or 195440529 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

Adding to 11726431140 its reverse (4113462711), we get a palindrome (15839893851).

The spelling of 11726431140 in words is "eleven billion, seven hundred twenty-six million, four hundred thirty-one thousand, one hundred forty".