2578638283942 has 16 divisors (see below), whose sum is σ = 4653181866240. Its totient is φ = 1046965919688.

The previous prime is 2578638283927. The next prime is 2578638284009. The reversal of 2578638283942 is 2493828368752.

It is a super-2 number, since 2×2578638283942² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4847064178 + ... + 4847064709.

It is an arithmetic number, because the mean of its divisors is an integer number (290823866640).

Almost surely, 2^{2578638283942} is an apocalyptic number.

2578638283942 is a deficient number, since it is larger than the sum of its proper divisors (2074543582298).

2578638283942 is a wasteful number, since it uses less digits than its factorization.

2578638283942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9694128915.

The product of its digits is 278691840, while the sum is 67.

The spelling of 2578638283942 in words is "two trillion, five hundred seventy-eight billion, six hundred thirty-eight million, two hundred eighty-three thousand, nine hundred forty-two".