57481127781 has 32 divisors (see below), whose sum is σ = 96161722368. Its totient is φ = 29670114240.

The previous prime is 57481127773. The next prime is 57481127789. The reversal of 57481127781 is 18772118475.

It is an interprime number because it is at equal distance from previous prime (57481127773) and next prime (57481127789).

It is not a de Polignac number, because 57481127781 - 2³ = 57481127773 is a prime.

It is a super-2 number, since 2×57481127781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57481127789) 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 31 ways as a sum of consecutive naturals, for example, 756205 + ... + 828738.

It is an arithmetic number, because the mean of its divisors is an integer number (3005053824).

Almost surely, 2^57481127781 is an apocalyptic number.

It is an amenable number.

57481127781 is a deficient number, since it is larger than the sum of its proper divisors (38680594587).

57481127781 is a wasteful number, since it uses less digits than its factorization.

57481127781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585121.

The product of its digits is 878080, while the sum is 51.

The spelling of 57481127781 in words is "fifty-seven billion, four hundred eighty-one million, one hundred twenty-seven thousand, seven hundred eighty-one".