135802456779 has 8 divisors (see below), whose sum is σ = 197530846272. Its totient is φ = 82304519240.

The previous prime is 135802456759. The next prime is 135802456781. The reversal of 135802456779 is 977654208531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135802456779 - 2⁹ = 135802456267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135802456739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2057612949 + ... + 2057613014.

It is an arithmetic number, because the mean of its divisors is an integer number (24691355784).

It is a 2-persistent number, because it is pandigital, and so is 2⋅135802456779 = 271604913558, but 3⋅135802456779 = 407407370337 is not.

Almost surely, 2^135802456779 is an apocalyptic number.

135802456779 is a deficient number, since it is larger than the sum of its proper divisors (61728389493).

135802456779 is a wasteful number, since it uses less digits than its factorization.

135802456779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4115225977.

The product of its (nonzero) digits is 12700800, while the sum is 57.

The spelling of 135802456779 in words is "one hundred thirty-five billion, eight hundred two million, four hundred fifty-six thousand, seven hundred seventy-nine".