12157393340 has 48 divisors (see below), whose sum is σ = 26909275680. Its totient is φ = 4606667520.

The previous prime is 12157393319. The next prime is 12157393351. The reversal of 12157393340 is 4339375121.

12157393340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12157393294 and 12157393303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167006 + ... + 228485.

It is an arithmetic number, because the mean of its divisors is an integer number (560609910).

Almost surely, 2^12157393340 is an apocalyptic number.

12157393340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12157393340 is an abundant number, since it is smaller than the sum of its proper divisors (14751882340).

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

12157393340 is a wasteful number, since it uses less digits than its factorization.

12157393340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395582 (or 395580 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 38.

The spelling of 12157393340 in words is "twelve billion, one hundred fifty-seven million, three hundred ninety-three thousand, three hundred forty".