2078000003257 has 2 divisors, whose sum is σ = 2078000003258. Its totient is φ = 2078000003256.

The previous prime is 2078000003231. The next prime is 2078000003281. The reversal of 2078000003257 is 7523000008702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1670041874601 + 407958128656 = 1292301^2 + 638716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2078000003257 is a prime.

It is not a weakly prime, because it can be changed into another prime (2078000003297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039000001628 + 1039000001629.

It is an arithmetic number, because the mean of its divisors is an integer number (1039000001629).

Almost surely, 2^{2078000003257} is an apocalyptic number.

It is an amenable number.

2078000003257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2078000003257 is an equidigital number, since it uses as much as digits as its factorization.

2078000003257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 34.

Subtracting 2078000003257 from its reverse (7523000008702), we obtain a palindrome (5445000005445).

The spelling of 2078000003257 in words is "two trillion, seventy-eight billion, three thousand, two hundred fifty-seven".