12407052761557 has 8 divisors (see below), whose sum is σ = 12418924470552. Its totient is φ = 12395184806400.

The previous prime is 12407052761533. The next prime is 12407052761567. The reversal of 12407052761557 is 75516725070421.

It can be written as a sum of positive squares in 4 ways, for example, as 6707058860401 + 5699993901156 = 2589799^2 + 2387466^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12407052761557 - 2²³ = 12407044372949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12407052761567) 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, 5697453 + ... + 7568029.

It is an arithmetic number, because the mean of its divisors is an integer number (1552365558819).

Almost surely, 2^{12407052761557} is an apocalyptic number.

It is an amenable number.

12407052761557 is a deficient number, since it is larger than the sum of its proper divisors (11871708995).

12407052761557 is a wasteful number, since it uses less digits than its factorization.

12407052761557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876919.

The product of its (nonzero) digits is 4116000, while the sum is 52.

The spelling of 12407052761557 in words is "twelve trillion, four hundred seven billion, fifty-two million, seven hundred sixty-one thousand, five hundred fifty-seven".