2566695495840 has 96 divisors (see below), whose sum is σ = 9240103797120. Its totient is φ = 586673255424.

The previous prime is 2566695495829. The next prime is 2566695495857. The reversal of 2566695495840 is 485945966652.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381945375 + ... + 381952094.

It is an arithmetic number, because the mean of its divisors is an integer number (96251081220).

Almost surely, 2^{2566695495840} is an apocalyptic number.

2566695495840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2566695495840 is an abundant number, since it is smaller than the sum of its proper divisors (6673408301280).

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

2566695495840 is a wasteful number, since it uses less digits than its factorization.

2566695495840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763897494 (or 763897486 counting only the distinct ones).

The product of its (nonzero) digits is 559872000, while the sum is 69.

The spelling of 2566695495840 in words is "two trillion, five hundred sixty-six billion, six hundred ninety-five million, four hundred ninety-five thousand, eight hundred forty".