12257780135890 has 32 divisors (see below), whose sum is σ = 23067499614336. Its totient is φ = 4680931432320.

The previous prime is 12257780135807. The next prime is 12257780135911. The reversal of 12257780135890 is 9853108775221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51026712 + ... + 51266371.

It is an arithmetic number, because the mean of its divisors is an integer number (720859362948).

Almost surely, 2^{12257780135890} is an apocalyptic number.

12257780135890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12257780135890 is a deficient number, since it is larger than the sum of its proper divisors (10809719478446).

12257780135890 is a wasteful number, since it uses less digits than its factorization.

12257780135890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102293634.

The product of its (nonzero) digits is 8467200, while the sum is 58.

The spelling of 12257780135890 in words is "twelve trillion, two hundred fifty-seven billion, seven hundred eighty million, one hundred thirty-five thousand, eight hundred ninety".