2564105671798 has 16 divisors (see below), whose sum is σ = 4196121930000. Its totient is φ = 1165415731200.

The previous prime is 2564105671747. The next prime is 2564105671867. The reversal of 2564105671798 is 8971765014652.

It is a super-2 number, since 2×2564105671798² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4039923 + ... + 4631326.

It is an arithmetic number, because the mean of its divisors is an integer number (262257620625).

Almost surely, 2^{2564105671798} is an apocalyptic number.

2564105671798 is a deficient number, since it is larger than the sum of its proper divisors (1632016258202).

2564105671798 is a wasteful number, since it uses less digits than its factorization.

2564105671798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8684703.

The product of its (nonzero) digits is 25401600, while the sum is 61.

The spelling of 2564105671798 in words is "two trillion, five hundred sixty-four billion, one hundred five million, six hundred seventy-one thousand, seven hundred ninety-eight".