136855280988 has 36 divisors (see below), whose sum is σ = 346560865560. Its totient is φ = 45536520096.

The previous prime is 136855280987. The next prime is 136855281011. The reversal of 136855280988 is 889082558631.

136855280988 is a `hidden beast` number, since 13 + 6 + 8 + 5 + 528 + 0 + 98 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×136855280988² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136855280987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3392458 + ... + 3432561.

It is an arithmetic number, because the mean of its divisors is an integer number (9626690710).

Almost surely, 2^136855280988 is an apocalyptic number.

136855280988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

136855280988 is an abundant number, since it is smaller than the sum of its proper divisors (209705584572).

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

136855280988 is a wasteful number, since it uses less digits than its factorization.

136855280988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6825586 (or 6825581 counting only the distinct ones).

The product of its (nonzero) digits is 33177600, while the sum is 63.

The spelling of 136855280988 in words is "one hundred thirty-six billion, eight hundred fifty-five million, two hundred eighty thousand, nine hundred eighty-eight".