53233217928 has 512 divisors, whose sum is σ = 178827264000. Its totient is φ = 14482955520.

The previous prime is 53233217897. The next prime is 53233217957. The reversal of 53233217928 is 82971233235.

53233217928 is a `hidden beast` number, since 532 + 3 + 3 + 21 + 7 + 92 + 8 = 666.

It is a super-2 number, since 2×53233217928² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 173397951 + ... + 173398257.

It is an arithmetic number, because the mean of its divisors is an integer number (349272000).

Almost surely, 2^53233217928 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 53233217928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89413632000).

53233217928 is an abundant number, since it is smaller than the sum of its proper divisors (125594046072).

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

53233217928 is a wasteful number, since it uses less digits than its factorization.

53233217928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 532 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The spelling of 53233217928 in words is "fifty-three billion, two hundred thirty-three million, two hundred seventeen thousand, nine hundred twenty-eight".