11154545477 has 2 divisors, whose sum is σ = 11154545478. Its totient is φ = 11154545476.

The previous prime is 11154545459. The next prime is 11154545483. The reversal of 11154545477 is 77454545111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7272507841 + 3882037636 = 85279^2 + 62306^2 .

It is an emirp because it is prime and its reverse (77454545111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11154545477 - 2¹⁴ = 11154529093 is a prime.

It is a super-2 number, since 2×11154545477² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11154545417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5577272738 + 5577272739.

It is an arithmetic number, because the mean of its divisors is an integer number (5577272739).

Almost surely, 2^11154545477 is an apocalyptic number.

It is an amenable number.

11154545477 is a deficient number, since it is larger than the sum of its proper divisors (1).

11154545477 is an equidigital number, since it uses as much as digits as its factorization.

11154545477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 392000, while the sum is 44.

The spelling of 11154545477 in words is "eleven billion, one hundred fifty-four million, five hundred forty-five thousand, four hundred seventy-seven".