135779123454 has 48 divisors (see below), whose sum is σ = 311351541552. Its totient is φ = 39320646144.

The previous prime is 135779123453. The next prime is 135779123503. The reversal of 135779123454 is 454321977531.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 135779123397 and 135779123406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135779123453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3921129 + ... + 3955604.

It is an arithmetic number, because the mean of its divisors is an integer number (6486490449).

Almost surely, 2^135779123454 is an apocalyptic number.

135779123454 is an abundant number, since it is smaller than the sum of its proper divisors (175572418098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135779123454 is a wasteful number, since it uses less digits than its factorization.

135779123454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7876781 (or 7876768 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 51.

The spelling of 135779123454 in words is "one hundred thirty-five billion, seven hundred seventy-nine million, one hundred twenty-three thousand, four hundred fifty-four".