135787820556 has 96 divisors (see below), whose sum is σ = 340339507200. Its totient is φ = 42058416960.

The previous prime is 135787820549. The next prime is 135787820573. The reversal of 135787820556 is 655028787531.

It is a super-2 number, since 2×135787820556² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135787820496 and 135787820505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 871825 + ... + 1015703.

It is an arithmetic number, because the mean of its divisors is an integer number (3545203200).

Almost surely, 2^135787820556 is an apocalyptic number.

It is an amenable number.

135787820556 is an abundant number, since it is smaller than the sum of its proper divisors (204551686644).

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

135787820556 is a wasteful number, since it uses less digits than its factorization.

135787820556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144019 (or 144017 counting only the distinct ones).

The product of its (nonzero) digits is 14112000, while the sum is 57.

The spelling of 135787820556 in words is "one hundred thirty-five billion, seven hundred eighty-seven million, eight hundred twenty thousand, five hundred fifty-six".