52116517512 has 96 divisors (see below), whose sum is σ = 147467361600. Its totient is φ = 16596379008.

The previous prime is 52116517511. The next prime is 52116517529. The reversal of 52116517512 is 21571561125.

52116517512 is a `hidden beast` number, since 521 + 1 + 6 + 51 + 75 + 12 = 666.

It is a super-2 number, since 2×52116517512² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (52116517511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1353843 + ... + 1391805.

It is an arithmetic number, because the mean of its divisors is an integer number (1536118350).

Almost surely, 2^52116517512 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 52116517512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73733680800).

52116517512 is an abundant number, since it is smaller than the sum of its proper divisors (95350844088).

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

52116517512 is a wasteful number, since it uses less digits than its factorization.

52116517512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38827 (or 38820 counting only the distinct ones).

The product of its digits is 21000, while the sum is 36.

The spelling of 52116517512 in words is "fifty-two billion, one hundred sixteen million, five hundred seventeen thousand, five hundred twelve".