57278285405 has 16 divisors (see below), whose sum is σ = 78242592384. Its totient is φ = 39845762880.

The previous prime is 57278285377. The next prime is 57278285447. The reversal of 57278285405 is 50458287275.

57278285405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57278285405 - 2⁶ = 57278285341 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22638374 + ... + 22640903.

It is an arithmetic number, because the mean of its divisors is an integer number (4890162024).

Almost surely, 2^57278285405 is an apocalyptic number.

57278285405 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

57278285405 is a deficient number, since it is larger than the sum of its proper divisors (20964306979).

57278285405 is a wasteful number, since it uses less digits than its factorization.

57278285405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45279316.

The product of its (nonzero) digits is 6272000, while the sum is 53.

The spelling of 57278285405 in words is "fifty-seven billion, two hundred seventy-eight million, two hundred eighty-five thousand, four hundred five".