2564105128490 has 32 divisors (see below), whose sum is σ = 4661865563904. Its totient is φ = 1015317374400.

The previous prime is 2564105128423. The next prime is 2564105128493. The reversal of 2564105128490 is 948215014652.

It is not an unprimeable number, because it can be changed into a prime (2564105128493) 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, 5918447 + ... + 6336893.

It is an arithmetic number, because the mean of its divisors is an integer number (145683298872).

Almost surely, 2^{2564105128490} is an apocalyptic number.

2564105128490 is a deficient number, since it is larger than the sum of its proper divisors (2097760435414).

2564105128490 is a wasteful number, since it uses less digits than its factorization.

2564105128490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424622.

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 2564105128490 in words is "two trillion, five hundred sixty-four billion, one hundred five million, one hundred twenty-eight thousand, four hundred ninety".