52151787668 has 12 divisors (see below), whose sum is σ = 91269584532. Its totient is φ = 26074763520.

The previous prime is 52151787617. The next prime is 52151787673. The reversal of 52151787668 is 86678715125.

It can be written as a sum of positive squares in 2 ways, for example, as 16646676484 + 35505111184 = 129022^2 + 188428^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174143 + ... + 366918.

It is an arithmetic number, because the mean of its divisors is an integer number (7605798711).

Almost surely, 2^52151787668 is an apocalyptic number.

It is an amenable number.

52151787668 is a deficient number, since it is larger than the sum of its proper divisors (39117796864).

52151787668 is a wasteful number, since it uses less digits than its factorization.

52151787668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565162 (or 565160 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 56.

The spelling of 52151787668 in words is "fifty-two billion, one hundred fifty-one million, seven hundred eighty-seven thousand, six hundred sixty-eight".