52201865642 has 4 divisors (see below), whose sum is σ = 78302798466. Its totient is φ = 26100932820.

The previous prime is 52201865593. The next prime is 52201865663. The reversal of 52201865642 is 24656810225.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 51166892401 + 1034973241 = 226201^2 + 32171^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 52201865642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13050466409 + ... + 13050466412.

Almost surely, 2^52201865642 is an apocalyptic number.

52201865642 is a deficient number, since it is larger than the sum of its proper divisors (26100932824).

52201865642 is a wasteful number, since it uses less digits than its factorization.

52201865642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26100932823.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 52201865642 in words is "fifty-two billion, two hundred one million, eight hundred sixty-five thousand, six hundred forty-two".