1011142293857 has 2 divisors, whose sum is σ = 1011142293858. Its totient is φ = 1011142293856.

The previous prime is 1011142293839. The next prime is 1011142293883. The reversal of 1011142293857 is 7583922411101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 985580359696 + 25561934161 = 992764^2 + 159881^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011142293857 - 2³² = 1006847326561 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011142293817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505571146928 + 505571146929.

It is an arithmetic number, because the mean of its divisors is an integer number (505571146929).

Almost surely, 2^{1011142293857} is an apocalyptic number.

It is an amenable number.

1011142293857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011142293857 is an equidigital number, since it uses as much as digits as its factorization.

1011142293857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 1011142293857 in words is "one trillion, eleven billion, one hundred forty-two million, two hundred ninety-three thousand, eight hundred fifty-seven".