57123126550 has 48 divisors (see below), whose sum is σ = 122154681600. Its totient is φ = 19467776160.

The previous prime is 57123126523. The next prime is 57123126563. The reversal of 57123126550 is 5562132175.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 430200 + ... + 547099.

It is an arithmetic number, because the mean of its divisors is an integer number (2544889200).

Almost surely, 2^57123126550 is an apocalyptic number.

57123126550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

57123126550 is an abundant number, since it is smaller than the sum of its proper divisors (65031555050).

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

57123126550 is a wasteful number, since it uses less digits than its factorization.

57123126550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977485 (or 977480 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 37.

The spelling of 57123126550 in words is "fifty-seven billion, one hundred twenty-three million, one hundred twenty-six thousand, five hundred fifty".