57489621187 has 2 divisors, whose sum is σ = 57489621188. Its totient is φ = 57489621186.

The previous prime is 57489621131. The next prime is 57489621197. The reversal of 57489621187 is 78112698475.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57489621187 is a prime.

It is a super-3 number, since 3×57489621187³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (57489621197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28744810593 + 28744810594.

It is an arithmetic number, because the mean of its divisors is an integer number (28744810594).

Almost surely, 2^57489621187 is an apocalyptic number.

57489621187 is a deficient number, since it is larger than the sum of its proper divisors (1).

57489621187 is an equidigital number, since it uses as much as digits as its factorization.

57489621187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6773760, while the sum is 58.

The spelling of 57489621187 in words is "fifty-seven billion, four hundred eighty-nine million, six hundred twenty-one thousand, one hundred eighty-seven".