2557428447938 has 32 divisors (see below), whose sum is σ = 4752674008320. Its totient is φ = 1005029726400.

The previous prime is 2557428447929. The next prime is 2557428447943. The reversal of 2557428447938 is 8397448247552.

2557428447938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 46501673 + ... + 46556636.

It is an arithmetic number, because the mean of its divisors is an integer number (148521062760).

Almost surely, 2^{2557428447938} is an apocalyptic number.

2557428447938 is a deficient number, since it is larger than the sum of its proper divisors (2195245560382).

2557428447938 is a wasteful number, since it uses less digits than its factorization.

2557428447938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93058482.

The product of its digits is 541900800, while the sum is 68.

The spelling of 2557428447938 in words is "two trillion, five hundred fifty-seven billion, four hundred twenty-eight million, four hundred forty-seven thousand, nine hundred thirty-eight".