135779123503 has 2 divisors, whose sum is σ = 135779123504. Its totient is φ = 135779123502.

The previous prime is 135779123453. The next prime is 135779123509. The reversal of 135779123503 is 305321977531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135779123503 - 2¹⁷ = 135778992431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135779123509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67889561751 + 67889561752.

It is an arithmetic number, because the mean of its divisors is an integer number (67889561752).

Almost surely, 2^135779123503 is an apocalyptic number.

135779123503 is a deficient number, since it is larger than the sum of its proper divisors (1).

135779123503 is an equidigital number, since it uses as much as digits as its factorization.

135779123503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 595350, while the sum is 46.

The spelling of 135779123503 in words is "one hundred thirty-five billion, seven hundred seventy-nine million, one hundred twenty-three thousand, five hundred three".