1564211553011 has 16 divisors (see below), whose sum is σ = 1640495925504. Its totient is φ = 1488625510944.

The previous prime is 1564211552989. The next prime is 1564211553043. The reversal of 1564211553011 is 1103551124651.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1564211553011 is a prime.

It is a super-2 number, since 2×1564211553011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1564211453011) by changing a digit.

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, 7853225 + ... + 8049941.

It is an arithmetic number, because the mean of its divisors is an integer number (102530995344).

Almost surely, 2^{1564211553011} is an apocalyptic number.

1564211553011 is a deficient number, since it is larger than the sum of its proper divisors (76284372493).

1564211553011 is a wasteful number, since it uses less digits than its factorization.

1564211553011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198490.

The product of its (nonzero) digits is 18000, while the sum is 35.

Adding to 1564211553011 its reverse (1103551124651), we get a palindrome (2667762677662).

The spelling of 1564211553011 in words is "one trillion, five hundred sixty-four billion, two hundred eleven million, five hundred fifty-three thousand, eleven".