57403062440 has 32 divisors (see below), whose sum is σ = 132647620680. Its totient is φ = 22340650752.

The previous prime is 57403062389. The next prime is 57403062473. The reversal of 57403062440 is 4426030475.

It can be written as a sum of positive squares in 4 ways, for example, as 38830278916 + 18572783524 = 197054^2 + 136282^2 .

It is a super-2 number, since 2×57403062440² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57403062440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19391447 + ... + 19394406.

Almost surely, 2^57403062440 is an apocalyptic number.

It is an amenable number.

57403062440 is an abundant number, since it is smaller than the sum of its proper divisors (75244558240).

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

57403062440 is a wasteful number, since it uses less digits than its factorization.

57403062440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38785901 (or 38785897 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 57403062440 in words is "fifty-seven billion, four hundred three million, sixty-two thousand, four hundred forty".