1867223329056 has 144 divisors (see below), whose sum is σ = 5463187362360. Its totient is φ = 604574576640.

The previous prime is 1867223329043. The next prime is 1867223329057. The reversal of 1867223329056 is 6509233227681.

1867223329056 is a `hidden beast` number, since 1 + 8 + 6 + 72 + 233 + 290 + 56 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 926098275600 + 941125053456 = 962340^2 + 970116^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×1867223329056² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1867223328993 and 1867223329011.

It is not an unprimeable number, because it can be changed into a prime (1867223329057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2358766 + ... + 3049298.

Almost surely, 2^{1867223329056} is an apocalyptic number.

1867223329056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1867223329056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2731593681180).

1867223329056 is an abundant number, since it is smaller than the sum of its proper divisors (3595964033304).

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

1867223329056 is a wasteful number, since it uses less digits than its factorization.

1867223329056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690819 (or 690808 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 1867223329056 in words is "one trillion, eight hundred sixty-seven billion, two hundred twenty-three million, three hundred twenty-nine thousand, fifty-six".