1139981154479 has 2 divisors, whose sum is σ = 1139981154480. Its totient is φ = 1139981154478.

The previous prime is 1139981154373. The next prime is 1139981154503. The reversal of 1139981154479 is 9744511899311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1139981154479 - 2¹⁶ = 1139981088943 is a prime.

It is a super-2 number, since 2×1139981154479² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1139981154079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569990577239 + 569990577240.

It is an arithmetic number, because the mean of its divisors is an integer number (569990577240).

Almost surely, 2^{1139981154479} is an apocalyptic number.

1139981154479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139981154479 is an equidigital number, since it uses as much as digits as its factorization.

1139981154479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9797760, while the sum is 62.

The spelling of 1139981154479 in words is "one trillion, one hundred thirty-nine billion, nine hundred eighty-one million, one hundred fifty-four thousand, four hundred seventy-nine".