12157061113507 has 8 divisors (see below), whose sum is σ = 12914111293776. Its totient is φ = 11404669704192.

The previous prime is 12157061113501. The next prime is 12157061113529. The reversal of 12157061113507 is 70531116075121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12157061113507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12157061113507.

It is not an unprimeable number, because it can be changed into a prime (12157061113501) 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, 1164687358 + ... + 1164697795.

It is an arithmetic number, because the mean of its divisors is an integer number (1614263911722).

Almost surely, 2^{12157061113507} is an apocalyptic number.

12157061113507 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12157061113507 is a deficient number, since it is larger than the sum of its proper divisors (757050180269).

12157061113507 is a wasteful number, since it uses less digits than its factorization.

12157061113507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329385477.

The product of its (nonzero) digits is 44100, while the sum is 40.

Adding to 12157061113507 its reverse (70531116075121), we get a palindrome (82688177188628).

The spelling of 12157061113507 in words is "twelve trillion, one hundred fifty-seven billion, sixty-one million, one hundred thirteen thousand, five hundred seven".