57161677650 has 576 divisors, whose sum is σ = 191507742720. Its totient is φ = 11125900800.

The previous prime is 57161677571. The next prime is 57161677679. The reversal of 57161677650 is 5677616175.

It is a junction number, because it is equal to n+sod(n) for n = 57161677593 and 57161677602.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 195090904 + ... + 195091196.

It is an arithmetic number, because the mean of its divisors is an integer number (332478720).

Almost surely, 2^57161677650 is an apocalyptic number.

57161677650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 57161677650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95753871360).

57161677650 is an abundant number, since it is smaller than the sum of its proper divisors (134346065070).

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

57161677650 is a wasteful number, since it uses less digits than its factorization.

57161677650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 1852200, while the sum is 51.

The spelling of 57161677650 in words is "fifty-seven billion, one hundred sixty-one million, six hundred seventy-seven thousand, six hundred fifty".