53478521460 has 672 divisors, whose sum is σ = 219520288512. Its totient is φ = 10615173120.

The previous prime is 53478521449. The next prime is 53478521497. The reversal of 53478521460 is 6412587435.

53478521460 is a `hidden beast` number, since 53 + 4 + 78 + 521 + 4 + 6 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

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 223 ways as a sum of consecutive naturals, for example, 22554075 + ... + 22556445.

It is an arithmetic number, because the mean of its divisors is an integer number (326667096).

Almost surely, 2^53478521460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53478521460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109760144256).

53478521460 is an abundant number, since it is smaller than the sum of its proper divisors (166041767052).

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

53478521460 is a wasteful number, since it uses less digits than its factorization.

53478521460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435 (or 2418 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 53478521460 in words is "fifty-three billion, four hundred seventy-eight million, five hundred twenty-one thousand, four hundred sixty".