57157017109949 has 8 divisors (see below), whose sum is σ = 59670406983000. Its totient is φ = 54679791120192.

The previous prime is 57157017109919. The next prime is 57157017109957. The reversal of 57157017109949 is 94990171075175.

It can be written as a sum of positive squares in 4 ways, for example, as 5909673484324 + 51247343625625 = 2430982^2 + 7158725^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57157017109949 - 2²⁰ = 57157016061373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57157017109919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9040967594 + ... + 9040973915.

It is an arithmetic number, because the mean of its divisors is an integer number (7458800872875).

Almost surely, 2^{57157017109949} is an apocalyptic number.

It is an amenable number.

57157017109949 is a deficient number, since it is larger than the sum of its proper divisors (2513389873051).

57157017109949 is a wasteful number, since it uses less digits than its factorization.

57157017109949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18081941647.

The product of its (nonzero) digits is 25004700, while the sum is 65.

The spelling of 57157017109949 in words is "fifty-seven trillion, one hundred fifty-seven billion, seventeen million, one hundred nine thousand, nine hundred forty-nine".