851028250628 has 12 divisors (see below), whose sum is σ = 1491168075852. Its totient is φ = 424980228960.

The previous prime is 851028250613. The next prime is 851028250637. The reversal of 851028250628 is 826052820158.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 320953974784 + 530074275844 = 566528^2 + 728062^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133470503 + ... + 133476878.

It is an arithmetic number, because the mean of its divisors is an integer number (124264006321).

Almost surely, 2^851028250628 is an apocalyptic number.

It is an amenable number.

851028250628 is a deficient number, since it is larger than the sum of its proper divisors (640139825224).

851028250628 is a wasteful number, since it uses less digits than its factorization.

851028250628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266948182 (or 266948180 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 47.

The spelling of 851028250628 in words is "eight hundred fifty-one billion, twenty-eight million, two hundred fifty thousand, six hundred twenty-eight".