18077770212 has 48 divisors (see below), whose sum is σ = 43165362240. Its totient is φ = 5886361728.

The previous prime is 18077770211. The next prime is 18077770237. The reversal of 18077770212 is 21207777081.

It is not an unprimeable number, because it can be changed into a prime (18077770211) 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, 83583 + ... + 207705.

It is an arithmetic number, because the mean of its divisors is an integer number (899278380).

Almost surely, 2^18077770212 is an apocalyptic number.

18077770212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18077770212 is an abundant number, since it is smaller than the sum of its proper divisors (25087592028).

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

18077770212 is a wasteful number, since it uses less digits than its factorization.

18077770212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124412 (or 124410 counting only the distinct ones).

The product of its (nonzero) digits is 76832, while the sum is 42.

The spelling of 18077770212 in words is "eighteen billion, seventy-seven million, seven hundred seventy thousand, two hundred twelve".