851041656 has 48 divisors (see below), whose sum is σ = 2384389800. Its totient is φ = 273897792.

The previous prime is 851041651. The next prime is 851041657. The reversal of 851041656 is 656140158.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 851041656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851041651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201706 + ... + 205881.

Almost surely, 2^851041656 is an apocalyptic number.

It is an amenable number.

851041656 is an abundant number, since it is smaller than the sum of its proper divisors (1533348144).

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

851041656 is a wasteful number, since it uses less digits than its factorization.

851041656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407628 (or 407621 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 851041656 is about 29172.6182575373. The cubic root of 851041656 is about 947.6550312432.

The spelling of 851041656 in words is "eight hundred fifty-one million, forty-one thousand, six hundred fifty-six".