57421951560 has 96 divisors (see below), whose sum is σ = 186717960000. Its totient is φ = 15304593024.

The previous prime is 57421951549. The next prime is 57421951567. The reversal of 57421951560 is 6515912475.

It is a happy number.

57421951560 is a `hidden beast` number, since 5 + 74 + 2 + 1 + 9 + 515 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (57421951567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 672141 + ... + 752739.

It is an arithmetic number, because the mean of its divisors is an integer number (1944978750).

Almost surely, 2^57421951560 is an apocalyptic number.

It is an amenable number.

57421951560 is an abundant number, since it is smaller than the sum of its proper divisors (129296008440).

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

57421951560 is a wasteful number, since it uses less digits than its factorization.

57421951560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82595 (or 82588 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The spelling of 57421951560 in words is "fifty-seven billion, four hundred twenty-one million, nine hundred fifty-one thousand, five hundred sixty".