647103037851 has 24 divisors (see below), whose sum is σ = 956870154240. Its totient is φ = 421180660656.

The previous prime is 647103037813. The next prime is 647103037873. The reversal of 647103037851 is 158730301746.

It is not a de Polignac number, because 647103037851 - 2³⁰ = 646029296027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 647103037797 and 647103037806.

It is not an unprimeable number, because it can be changed into a prime (647103037891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 493090 + ... + 1239896.

It is an arithmetic number, because the mean of its divisors is an integer number (39869589760).

Almost surely, 2^647103037851 is an apocalyptic number.

647103037851 is a deficient number, since it is larger than the sum of its proper divisors (309767116389).

647103037851 is a wasteful number, since it uses less digits than its factorization.

647103037851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749095 (or 749092 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 647103037851 in words is "six hundred forty-seven billion, one hundred three million, thirty-seven thousand, eight hundred fifty-one".