57012606450 has 72 divisors (see below), whose sum is σ = 153475416900. Its totient is φ = 15173431680.

The previous prime is 57012606407. The next prime is 57012606493. The reversal of 57012606450 is 5460621075.

It is a happy number.

57012606450 is a `hidden beast` number, since 5 + 7 + 0 + 1 + 2 + 6 + 0 + 645 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (57012606407) and next prime (57012606493).

It can be written as a sum of positive squares in 6 ways, for example, as 22185208809 + 34827397641 = 148947^2 + 186621^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 104596 + ... + 353504.

Almost surely, 2^57012606450 is an apocalyptic number.

57012606450 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 57012606450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76737708450).

57012606450 is an abundant number, since it is smaller than the sum of its proper divisors (96462810450).

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

57012606450 is a wasteful number, since it uses less digits than its factorization.

57012606450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249436 (or 249428 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 57012606450 in words is "fifty-seven billion, twelve million, six hundred six thousand, four hundred fifty".