851249034844 has 24 divisors (see below), whose sum is σ = 1623605674320. Its totient is φ = 388150623744.

The previous prime is 851249034817. The next prime is 851249034887. The reversal of 851249034844 is 448430942158.

851249034844 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 2×851249034844² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 851249034791 and 851249034800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98611189 + ... + 98619820.

It is an arithmetic number, because the mean of its divisors is an integer number (67650236430).

Almost surely, 2^851249034844 is an apocalyptic number.

It is an amenable number.

851249034844 is a deficient number, since it is larger than the sum of its proper divisors (772356639476).

851249034844 is a wasteful number, since it uses less digits than its factorization.

851249034844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197231109 (or 197231107 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 52.

The spelling of 851249034844 in words is "eight hundred fifty-one billion, two hundred forty-nine million, thirty-four thousand, eight hundred forty-four".