11988075381257 has 2 divisors, whose sum is σ = 11988075381258. Its totient is φ = 11988075381256.

The previous prime is 11988075381253. The next prime is 11988075381349. The reversal of 11988075381257 is 75218357088911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9518576277961 + 2469499103296 = 3085219^2 + 1571464^2 .

It is a cyclic number.

It is not a de Polignac number, because 11988075381257 - 2² = 11988075381253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11988075381193 and 11988075381202.

It is not a weakly prime, because it can be changed into another prime (11988075381253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5994037690628 + 5994037690629.

It is an arithmetic number, because the mean of its divisors is an integer number (5994037690629).

Almost surely, 2^{11988075381257} is an apocalyptic number.

It is an amenable number.

11988075381257 is a deficient number, since it is larger than the sum of its proper divisors (1).

11988075381257 is an equidigital number, since it uses as much as digits as its factorization.

11988075381257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33868800, while the sum is 65.

The spelling of 11988075381257 in words is "eleven trillion, nine hundred eighty-eight billion, seventy-five million, three hundred eighty-one thousand, two hundred fifty-seven".