2078217057 has 24 divisors (see below), whose sum is σ = 3237862656. Its totient is φ = 1182208608.

The previous prime is 2078216981. The next prime is 2078217059. The reversal of 2078217057 is 7507128702.

It is not a de Polignac number, because 2078217057 - 2⁷ = 2078216929 is a prime.

It is a super-2 number, since 2×2078217057² = 8637972272011482498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2078217059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1083 + ... + 64479.

It is an arithmetic number, because the mean of its divisors is an integer number (134910944).

Almost surely, 2^2078217057 is an apocalyptic number.

It is an amenable number.

2078217057 is a deficient number, since it is larger than the sum of its proper divisors (1159645599).

2078217057 is a wasteful number, since it uses less digits than its factorization.

2078217057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63637 (or 63630 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 39.

The square root of 2078217057 is about 45587.4660076649. The cubic root of 2078217057 is about 1276.1360234132.

The spelling of 2078217057 in words is "two billion, seventy-eight million, two hundred seventeen thousand, fifty-seven".