135256261904 has 10 divisors (see below), whose sum is σ = 262059007470. Its totient is φ = 67628130944.

The previous prime is 135256261879. The next prime is 135256261927. The reversal of 135256261904 is 409162652531.

It can be written as a sum of positive squares in only one way, i.e., 84564640000 + 50691621904 = 290800^2 + 225148^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4226758169 + ... + 4226758200.

It is an arithmetic number, because the mean of its divisors is an integer number (26205900747).

Almost surely, 2^135256261904 is an apocalyptic number.

It is an amenable number.

135256261904 is a deficient number, since it is larger than the sum of its proper divisors (126802745566).

135256261904 is an equidigital number, since it uses as much as digits as its factorization.

135256261904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8453516377 (or 8453516371 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 135256261904 in words is "one hundred thirty-five billion, two hundred fifty-six million, two hundred sixty-one thousand, nine hundred four".