2057142342857 has 24 divisors (see below), whose sum is σ = 2438550117000. Its totient is φ = 1729714162176.

The previous prime is 2057142342841. The next prime is 2057142342883. The reversal of 2057142342857 is 7582432417502.

It can be written as a sum of positive squares in 4 ways, for example, as 12096480256 + 2045045862601 = 109984^2 + 1430051^2 .

2057142342857 is an astonishing number since 2057142342857 = 342857 + ... + 2057142.

It is not a de Polignac number, because 2057142342857 - 2⁴ = 2057142342841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2057142347857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16738769 + ... + 16861217.

It is an arithmetic number, because the mean of its divisors is an integer number (101606254875).

Almost surely, 2^{2057142342857} is an apocalyptic number.

It is an amenable number.

2057142342857 is a deficient number, since it is larger than the sum of its proper divisors (381407774143).

2057142342857 is a wasteful number, since it uses less digits than its factorization.

2057142342857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128985 (or 128978 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 50.

The spelling of 2057142342857 in words is "two trillion, fifty-seven billion, one hundred forty-two million, three hundred forty-two thousand, eight hundred fifty-seven".