57148395450 has 96 divisors (see below), whose sum is σ = 142548572736. Its totient is φ = 15151618560.

The previous prime is 57148395391. The next prime is 57148395461. The reversal of 57148395450 is 5459384175.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 57148395393 and 57148395402.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21063294 + ... + 21066006.

It is an arithmetic number, because the mean of its divisors is an integer number (1484880966).

Almost surely, 2^57148395450 is an apocalyptic number.

57148395450 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 57148395450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71274286368).

57148395450 is an abundant number, since it is smaller than the sum of its proper divisors (85400177286).

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

57148395450 is a wasteful number, since it uses less digits than its factorization.

57148395450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488 (or 3483 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 51.

The spelling of 57148395450 in words is "fifty-seven billion, one hundred forty-eight million, three hundred ninety-five thousand, four hundred fifty".