1564420231266 has 16 divisors (see below), whose sum is σ = 3128882320704. Its totient is φ = 521466434064.

The previous prime is 1564420231261. The next prime is 1564420231267. The reversal of 1564420231266 is 6621320244651.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1564420231261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1247341 + ... + 2164416.

It is an arithmetic number, because the mean of its divisors is an integer number (195555145044).

Almost surely, 2^{1564420231266} is an apocalyptic number.

1564420231266 is an abundant number, since it is smaller than the sum of its proper divisors (1564462089438).

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

1564420231266 is a wasteful number, since it uses less digits than its factorization.

1564420231266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488185.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 1564420231266 in words is "one trillion, five hundred sixty-four billion, four hundred twenty million, two hundred thirty-one thousand, two hundred sixty-six".