636676275390 has 64 divisors (see below), whose sum is σ = 1556871693120. Its totient is φ = 166588554240.

The previous prime is 636676275359. The next prime is 636676275397. The reversal of 636676275390 is 93572676636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636676275397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323152 + ... + 1173788.

It is an arithmetic number, because the mean of its divisors is an integer number (24326120205).

Almost surely, 2^636676275390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 636676275390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (778435846560).

636676275390 is an abundant number, since it is smaller than the sum of its proper divisors (920195417730).

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

636676275390 is a wasteful number, since it uses less digits than its factorization.

636676275390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851117.

The product of its (nonzero) digits is 51438240, while the sum is 60.

The spelling of 636676275390 in words is "six hundred thirty-six billion, six hundred seventy-six million, two hundred seventy-five thousand, three hundred ninety".