207178261164 has 192 divisors, whose sum is σ = 620141491200. Its totient is φ = 58590604800.

The previous prime is 207178261141. The next prime is 207178261219. The reversal of 207178261164 is 461162871702.

207178261164 is a `hidden beast` number, since 20 + 7 + 1 + 7 + 8 + 2 + 611 + 6 + 4 = 666.

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 in 63 ways as a sum of consecutive naturals, for example, 41691672 + ... + 41696640.

It is an arithmetic number, because the mean of its divisors is an integer number (3229903600).

Almost surely, 2^207178261164 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 207178261164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310070745600).

207178261164 is an abundant number, since it is smaller than the sum of its proper divisors (412963230036).

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

207178261164 is a wasteful number, since it uses less digits than its factorization.

207178261164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5541 (or 5533 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 207178261164 in words is "two hundred seven billion, one hundred seventy-eight million, two hundred sixty-one thousand, one hundred sixty-four".