136777945280 has 28 divisors (see below), whose sum is σ = 325702482960. Its totient is φ = 54711177984.

The previous prime is 136777945261. The next prime is 136777945289. The reversal of 136777945280 is 82549777631.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (136777945289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213715220 + ... + 213715859.

It is a 1-persistent number, because it is pandigital, but 2⋅136777945280 = 273555890560 is not.

Almost surely, 2^136777945280 is an apocalyptic number.

136777945280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136777945280 is an abundant number, since it is smaller than the sum of its proper divisors (188924537680).

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

136777945280 is an equidigital number, since it uses as much as digits as its factorization.

136777945280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427431096 (or 427431086 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 59.

The spelling of 136777945280 in words is "one hundred thirty-six billion, seven hundred seventy-seven million, nine hundred forty-five thousand, two hundred eighty".