12617213140 has 24 divisors (see below), whose sum is σ = 30281311872. Its totient is φ = 4325901600.

The previous prime is 12617213069. The next prime is 12617213149. The reversal of 12617213140 is 4131271621.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 12617213099 and 12617213108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12617213149) 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, 45061336 + ... + 45061615.

It is an arithmetic number, because the mean of its divisors is an integer number (1261721328).

Almost surely, 2^12617213140 is an apocalyptic number.

12617213140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12617213140 is an abundant number, since it is smaller than the sum of its proper divisors (17664098732).

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

12617213140 is a wasteful number, since it uses less digits than its factorization.

12617213140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90122967 (or 90122965 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

Adding to 12617213140 its reverse (4131271621), we get a palindrome (16748484761).

The spelling of 12617213140 in words is "twelve billion, six hundred seventeen million, two hundred thirteen thousand, one hundred forty".