57306291780 has 192 divisors, whose sum is σ = 182999900160. Its totient is φ = 13308696576.

The previous prime is 57306291733. The next prime is 57306291781. The reversal of 57306291780 is 8719260375.

It is a super-2 number, since 2×57306291780² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57306291781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 798957 + ... + 867723.

It is an arithmetic number, because the mean of its divisors is an integer number (953124480).

Almost surely, 2^57306291780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57306291780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91499950080).

57306291780 is an abundant number, since it is smaller than the sum of its proper divisors (125693608380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57306291780 is a wasteful number, since it uses less digits than its factorization.

57306291780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68858 (or 68856 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 57306291780 in words is "fifty-seven billion, three hundred six million, two hundred ninety-one thousand, seven hundred eighty".