1856223031047 has 64 divisors (see below), whose sum is σ = 3112731970560. Its totient is φ = 963787883520.

The previous prime is 1856223031009. The next prime is 1856223031093. The reversal of 1856223031047 is 7401303226581.

It is not a de Polignac number, because 1856223031047 - 2²² = 1856218836743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1856223031097) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59492083 + ... + 59523275.

It is an arithmetic number, because the mean of its divisors is an integer number (48636437040).

Almost surely, 2^{1856223031047} is an apocalyptic number.

1856223031047 is a deficient number, since it is larger than the sum of its proper divisors (1256508939513).

1856223031047 is a wasteful number, since it uses less digits than its factorization.

1856223031047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33365 (or 33343 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 1856223031047 in words is "one trillion, eight hundred fifty-six billion, two hundred twenty-three million, thirty-one thousand, forty-seven".