57122784381 has 16 divisors (see below), whose sum is σ = 82179921600. Its totient is φ = 35084999040.

The previous prime is 57122784373. The next prime is 57122784401. The reversal of 57122784381 is 18348722175.

It is not a de Polignac number, because 57122784381 - 2³ = 57122784373 is a prime.

It is a super-2 number, since 2×57122784381² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57122784381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57122784781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1385331 + ... + 1425968.

It is an arithmetic number, because the mean of its divisors is an integer number (5136245100).

Almost surely, 2^57122784381 is an apocalyptic number.

It is an amenable number.

57122784381 is a deficient number, since it is larger than the sum of its proper divisors (25057137219).

57122784381 is a wasteful number, since it uses less digits than its factorization.

57122784381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811836.

The product of its digits is 752640, while the sum is 48.

The spelling of 57122784381 in words is "fifty-seven billion, one hundred twenty-two million, seven hundred eighty-four thousand, three hundred eighty-one".