57528036381 has 4 divisors (see below), whose sum is σ = 76704048512. Its totient is φ = 38352024252.

The previous prime is 57528036257. The next prime is 57528036407. The reversal of 57528036381 is 18363082575.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 57528036381 - 2⁹ = 57528035869 is a prime.

It is a super-2 number, since 2×57528036381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57528036381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57528036781) 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 3 ways as a sum of consecutive naturals, for example, 9588006061 + ... + 9588006066.

It is an arithmetic number, because the mean of its divisors is an integer number (19176012128).

Almost surely, 2^57528036381 is an apocalyptic number.

It is an amenable number.

57528036381 is a deficient number, since it is larger than the sum of its proper divisors (19176012131).

57528036381 is a wasteful number, since it uses less digits than its factorization.

57528036381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19176012130.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 57528036381 in words is "fifty-seven billion, five hundred twenty-eight million, thirty-six thousand, three hundred eighty-one".