2257007778578 has 32 divisors (see below), whose sum is σ = 3942445841280. Its totient is φ = 948969290880.

The previous prime is 2257007778551. The next prime is 2257007778589. The reversal of 2257007778578 is 8758777007522.

It is a super-2 number, since 2×2257007778578² (a number of 26 digits) contains 22 as substring.

It is a Curzon 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, 10827158 + ... + 11033646.

It is an arithmetic number, because the mean of its divisors is an integer number (123201432540).

Almost surely, 2^{2257007778578} is an apocalyptic number.

2257007778578 is a deficient number, since it is larger than the sum of its proper divisors (1685438062702).

2257007778578 is a wasteful number, since it uses less digits than its factorization.

2257007778578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221282.

The product of its (nonzero) digits is 107564800, while the sum is 65.

The spelling of 2257007778578 in words is "two trillion, two hundred fifty-seven billion, seven million, seven hundred seventy-eight thousand, five hundred seventy-eight".