2564166078 has 32 divisors (see below), whose sum is σ = 5794732800. Its totient is φ = 840234168.

The previous prime is 2564166043. The next prime is 2564166079. The reversal of 2564166078 is 8706614652.

2564166078 is a `hidden beast` number, since 2 + 564 + 16 + 6 + 0 + 78 = 666.

2564166078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564166079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399226 + ... + 405597.

It is an arithmetic number, because the mean of its divisors is an integer number (181085400).

Almost surely, 2^2564166078 is an apocalyptic number.

2564166078 is an abundant number, since it is smaller than the sum of its proper divisors (3230566722).

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

2564166078 is a wasteful number, since it uses less digits than its factorization.

2564166078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804893 (or 804887 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 2564166078 is about 50637.5954997865. The cubic root of 2564166078 is about 1368.7224273673.

It can be divided in two parts, 25641 and 66078, that added together give a palindrome (91719).

The spelling of 2564166078 in words is "two billion, five hundred sixty-four million, one hundred sixty-six thousand, seventy-eight".