12354558340 has 36 divisors (see below), whose sum is σ = 26808533388. Its totient is φ = 4782402240.

The previous prime is 12354558329. The next prime is 12354558343. The reversal of 12354558340 is 4385545321.

It can be written as a sum of positive squares in 2 ways, for example, as 5646620736 + 6707937604 = 75144^2 + 81902^2 .

It is a super-2 number, since 2×12354558340² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12354558293 and 12354558302.

It is not an unprimeable number, because it can be changed into a prime (12354558343) 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, 302179 + ... + 340618.

It is an arithmetic number, because the mean of its divisors is an integer number (744681483).

Almost surely, 2^12354558340 is an apocalyptic number.

12354558340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12354558340 is an abundant number, since it is smaller than the sum of its proper divisors (14453975048).

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

12354558340 is a wasteful number, since it uses less digits than its factorization.

12354558340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642868 (or 642835 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 12354558340 in words is "twelve billion, three hundred fifty-four million, five hundred fifty-eight thousand, three hundred forty".