52161918688686 has 128 divisors (see below), whose sum is σ = 116161993728000. Its totient is φ = 15538639656960.

The previous prime is 52161918688673. The next prime is 52161918688699. The reversal of 52161918688686 is 68688681916125.

It is an interprime number because it is at equal distance from previous prime (52161918688673) and next prime (52161918688699).

It is a super-2 number, since 2×52161918688686² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1281630765 + ... + 1281671463.

It is an arithmetic number, because the mean of its divisors is an integer number (907515576000).

Almost surely, 2^{52161918688686} is an apocalyptic number.

52161918688686 is an abundant number, since it is smaller than the sum of its proper divisors (64000075039314).

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

52161918688686 is a wasteful number, since it uses less digits than its factorization.

52161918688686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47914.

The product of its digits is 477757440, while the sum is 75.

The spelling of 52161918688686 in words is "fifty-two trillion, one hundred sixty-one billion, nine hundred eighteen million, six hundred eighty-eight thousand, six hundred eighty-six".