12084501778 has 16 divisors (see below), whose sum is σ = 18742070016. Its totient is φ = 5837782320.

The previous prime is 12084501761. The next prime is 12084501817. The reversal of 12084501778 is 87710548021.

It is a super-2 number, since 2×12084501778² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120976 + ... + 196987.

It is an arithmetic number, because the mean of its divisors is an integer number (1171379376).

Almost surely, 2^12084501778 is an apocalyptic number.

12084501778 is a deficient number, since it is larger than the sum of its proper divisors (6657568238).

12084501778 is a wasteful number, since it uses less digits than its factorization.

12084501778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318609.

The product of its (nonzero) digits is 125440, while the sum is 43.

The spelling of 12084501778 in words is "twelve billion, eighty-four million, five hundred one thousand, seven hundred seventy-eight".