12356887550377 has 2 divisors, whose sum is σ = 12356887550378. Its totient is φ = 12356887550376.

The previous prime is 12356887550363. The next prime is 12356887550459. The reversal of 12356887550377 is 77305578865321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11504707475881 + 852180074496 = 3391859^2 + 923136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12356887550377 is a prime.

It is not a weakly prime, because it can be changed into another prime (12356887550347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6178443775188 + 6178443775189.

It is an arithmetic number, because the mean of its divisors is an integer number (6178443775189).

Almost surely, 2^{12356887550377} is an apocalyptic number.

It is an amenable number.

12356887550377 is a deficient number, since it is larger than the sum of its proper divisors (1).

12356887550377 is an equidigital number, since it uses as much as digits as its factorization.

12356887550377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 296352000, while the sum is 67.

The spelling of 12356887550377 in words is "twelve trillion, three hundred fifty-six billion, eight hundred eighty-seven million, five hundred fifty thousand, three hundred seventy-seven".