2273781465396 has 288 divisors, whose sum is σ = 6854027212032. Its totient is φ = 645655587840.

The previous prime is 2273781465391. The next prime is 2273781465407. The reversal of 2273781465396 is 6935641873722.

It is a happy number.

2273781465396 is a `hidden beast` number, since 2 + 2 + 7 + 3 + 7 + 81 + 465 + 3 + 96 = 666.

2273781465396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2273781465396² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2273781465391) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 868849080 + ... + 868851696.

Almost surely, 2^{2273781465396} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2273781465396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3427013606016).

2273781465396 is an abundant number, since it is smaller than the sum of its proper divisors (4580245746636).

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

2273781465396 is a wasteful number, since it uses less digits than its factorization.

2273781465396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3381 (or 3367 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 63.

The spelling of 2273781465396 in words is "two trillion, two hundred seventy-three billion, seven hundred eighty-one million, four hundred sixty-five thousand, three hundred ninety-six".