1564390628455 has 16 divisors (see below), whose sum is σ = 1881109785600. Its totient is φ = 1248952218880.

The previous prime is 1564390628417. The next prime is 1564390628459. The reversal of 1564390628455 is 5548260934651.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1564390628455 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1564390628455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1564390628459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55795290 + ... + 55823320.

It is an arithmetic number, because the mean of its divisors is an integer number (117569361600).

Almost surely, 2^{1564390628455} is an apocalyptic number.

1564390628455 is a deficient number, since it is larger than the sum of its proper divisors (316719157145).

1564390628455 is a wasteful number, since it uses less digits than its factorization.

1564390628455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50474.

The product of its (nonzero) digits is 31104000, while the sum is 58.

The spelling of 1564390628455 in words is "one trillion, five hundred sixty-four billion, three hundred ninety million, six hundred twenty-eight thousand, four hundred fifty-five".