52151787666 has 96 divisors (see below), whose sum is σ = 124043400000. Its totient is φ = 15704432640.

The previous prime is 52151787617. The next prime is 52151787673. The reversal of 52151787666 is 66678715125.

It is a happy number.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

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, 41754210 + ... + 41755458.

It is an arithmetic number, because the mean of its divisors is an integer number (1292118750).

Almost surely, 2^52151787666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52151787666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62021700000).

52151787666 is an abundant number, since it is smaller than the sum of its proper divisors (71891612334).

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

52151787666 is a wasteful number, since it uses less digits than its factorization.

52151787666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424 (or 2421 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 54.

The spelling of 52151787666 in words is "fifty-two billion, one hundred fifty-one million, seven hundred eighty-seven thousand, six hundred sixty-six".