1778323234413 has 16 divisors (see below), whose sum is σ = 2586864116736. Its totient is φ = 1077683265840.

The previous prime is 1778323234379. The next prime is 1778323234417. The reversal of 1778323234413 is 3144323238771.

It is not a de Polignac number, because 1778323234413 - 2⁶ = 1778323234349 is a prime.

It is a super-2 number, since 2×1778323234413² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1778323234417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1800181 + ... + 2607162.

It is an arithmetic number, because the mean of its divisors is an integer number (161679007296).

Almost surely, 2^{1778323234413} is an apocalyptic number.

It is an amenable number.

1778323234413 is a deficient number, since it is larger than the sum of its proper divisors (808540882323).

1778323234413 is a wasteful number, since it uses less digits than its factorization.

1778323234413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4419584.

The product of its digits is 2032128, while the sum is 48.

The spelling of 1778323234413 in words is "one trillion, seven hundred seventy-eight billion, three hundred twenty-three million, two hundred thirty-four thousand, four hundred thirteen".