57452981985 has 48 divisors (see below), whose sum is σ = 113923729920. Its totient is φ = 26238349440.

The previous prime is 57452981981. The next prime is 57452981987. The reversal of 57452981985 is 58918925475.

57452981985 is a `hidden beast` number, since 5 + 7 + 452 + 98 + 1 + 98 + 5 = 666.

It is not a de Polignac number, because 57452981985 - 2² = 57452981981 is a prime.

It is a super-3 number, since 3×57452981985³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (57452981981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 232296 + ... + 410934.

It is an arithmetic number, because the mean of its divisors is an integer number (2373411040).

Almost surely, 2^57452981985 is an apocalyptic number.

It is an amenable number.

57452981985 is a deficient number, since it is larger than the sum of its proper divisors (56470747935).

57452981985 is a wasteful number, since it uses less digits than its factorization.

57452981985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179678 (or 179675 counting only the distinct ones).

The product of its digits is 36288000, while the sum is 63.

The spelling of 57452981985 in words is "fifty-seven billion, four hundred fifty-two million, nine hundred eighty-one thousand, nine hundred eighty-five".