57276922780 has 384 divisors, whose sum is σ = 159881508864. Its totient is φ = 16721510400.

The previous prime is 57276922741. The next prime is 57276922831. The reversal of 57276922780 is 8722967275.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 237663460 + ... + 237663700.

It is an arithmetic number, because the mean of its divisors is an integer number (416358096).

Almost surely, 2^57276922780 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 57276922780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79940754432).

57276922780 is an abundant number, since it is smaller than the sum of its proper divisors (102604586084).

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

57276922780 is a wasteful number, since it uses less digits than its factorization.

57276922780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 55.

The spelling of 57276922780 in words is "fifty-seven billion, two hundred seventy-six million, nine hundred twenty-two thousand, seven hundred eighty".