2557661940896 has 48 divisors (see below), whose sum is σ = 5153008129920. Its totient is φ = 1249072312320.

The previous prime is 2557661940877. The next prime is 2557661940923. The reversal of 2557661940896 is 6980491667552.

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, 993281 + ... + 2470208.

It is an arithmetic number, because the mean of its divisors is an integer number (107354336040).

Almost surely, 2^{2557661940896} is an apocalyptic number.

It is an amenable number.

2557661940896 is an abundant number, since it is smaller than the sum of its proper divisors (2595346189024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2557661940896 is a wasteful number, since it uses less digits than its factorization.

2557661940896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3464037 (or 3464029 counting only the distinct ones).

The product of its (nonzero) digits is 195955200, while the sum is 68.

The spelling of 2557661940896 in words is "two trillion, five hundred fifty-seven billion, six hundred sixty-one million, nine hundred forty thousand, eight hundred ninety-six".