844656402051 has 48 divisors (see below), whose sum is σ = 1527814050048. Its totient is φ = 436849502400.

The previous prime is 844656402047. The next prime is 844656402097. The reversal of 844656402051 is 150204656448.

It is a happy number.

844656402051 is a `hidden beast` number, since 84 + 4 + 6 + 564 + 0 + 2 + 0 + 5 + 1 = 666.

844656402051 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 844656402051 - 2² = 844656402047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 844656401988 and 844656402006.

It is not an unprimeable number, because it can be changed into a prime (844656402001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2527360 + ... + 2841981.

It is an arithmetic number, because the mean of its divisors is an integer number (31829459376).

Almost surely, 2^844656402051 is an apocalyptic number.

844656402051 is a deficient number, since it is larger than the sum of its proper divisors (683157647997).

844656402051 is a wasteful number, since it uses less digits than its factorization.

844656402051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5369592 (or 5369589 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 45.

The spelling of 844656402051 in words is "eight hundred forty-four billion, six hundred fifty-six million, four hundred two thousand, fifty-one".