12277758402 has 270 divisors, whose sum is σ = 34444039851. Its totient is φ = 3159112320.

The previous prime is 12277758397. The next prime is 12277758421. The reversal of 12277758402 is 20485777221.

12277758402 is a `hidden beast` number, since 122 + 7 + 77 + 58 + 402 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 348531561 + 11929226841 = 18669^2 + 109221^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=78351.

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 299457502 + ... + 299457542.

Almost surely, 2^12277758402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12277758402

12277758402 is an abundant number, since it is smaller than the sum of its proper divisors (22166281449).

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

12277758402 is an equidigital number, since it uses as much as digits as its factorization.

12277758402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 45.

The spelling of 12277758402 in words is "twelve billion, two hundred seventy-seven million, seven hundred fifty-eight thousand, four hundred two".