2215768259536 has 40 divisors (see below), whose sum is σ = 4624487286440. Its totient is φ = 1022396484096.

The previous prime is 2215768259527. The next prime is 2215768259641. The reversal of 2215768259536 is 6359528675122.

It can be written as a sum of positive squares in 4 ways, for example, as 310694760000 + 1905073499536 = 557400^2 + 1380244^2 .

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 580971 + ... + 2183818.

It is an arithmetic number, because the mean of its divisors is an integer number (115612182161).

Almost surely, 2^{2215768259536} is an apocalyptic number.

2215768259536 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2215768259536 is an abundant number, since it is smaller than the sum of its proper divisors (2408719026904).

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

2215768259536 is a wasteful number, since it uses less digits than its factorization.

2215768259536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768663 (or 2768657 counting only the distinct ones).

The product of its digits is 54432000, while the sum is 61.

The spelling of 2215768259536 in words is "two trillion, two hundred fifteen billion, seven hundred sixty-eight million, two hundred fifty-nine thousand, five hundred thirty-six".