2057745705978 has 32 divisors (see below), whose sum is σ = 4361244068160. Its totient is φ = 646110227840.

The previous prime is 2057745705973. The next prime is 2057745705989. The reversal of 2057745705978 is 8795075477502.

It is not an unprimeable number, because it can be changed into a prime (2057745705973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144213900 + ... + 144228167.

It is an arithmetic number, because the mean of its divisors is an integer number (136288877130).

Almost surely, 2^{2057745705978} is an apocalyptic number.

2057745705978 is an abundant number, since it is smaller than the sum of its proper divisors (2303498362182).

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

2057745705978 is a wasteful number, since it uses less digits than its factorization.

2057745705978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288442142.

The product of its (nonzero) digits is 172872000, while the sum is 66.

The spelling of 2057745705978 in words is "two trillion, fifty-seven billion, seven hundred forty-five million, seven hundred five thousand, nine hundred seventy-eight".