135079249640 has 64 divisors (see below), whose sum is σ = 318715765200. Its totient is φ = 51453868032.

The previous prime is 135079249609. The next prime is 135079249649. The reversal of 135079249640 is 46942970531.

It can be written as a sum of positive squares in 8 ways, for example, as 112709261284 + 22369988356 = 335722^2 + 149566^2 .

It is not an unprimeable number, because it can be changed into a prime (135079249649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 712907 + ... + 882266.

Almost surely, 2^135079249640 is an apocalyptic number.

135079249640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135079249640 is an abundant number, since it is smaller than the sum of its proper divisors (183636515560).

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

135079249640 is a wasteful number, since it uses less digits than its factorization.

135079249640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595286 (or 1595282 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 135079249640 in words is "one hundred thirty-five billion, seventy-nine million, two hundred forty-nine thousand, six hundred forty".