11515381453 has 2 divisors, whose sum is σ = 11515381454. Its totient is φ = 11515381452.

The previous prime is 11515381439. The next prime is 11515381459. The reversal of 11515381453 is 35418351511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10550782089 + 964599364 = 102717^2 + 31058^2 .

It is an emirp because it is prime and its reverse (35418351511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11515381453 - 2¹⁷ = 11515250381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11515381459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5757690726 + 5757690727.

It is an arithmetic number, because the mean of its divisors is an integer number (5757690727).

Almost surely, 2^11515381453 is an apocalyptic number.

It is an amenable number.

11515381453 is a deficient number, since it is larger than the sum of its proper divisors (1).

11515381453 is an equidigital number, since it uses as much as digits as its factorization.

11515381453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 37.

The spelling of 11515381453 in words is "eleven billion, five hundred fifteen million, three hundred eighty-one thousand, four hundred fifty-three".