64246782100 has 18 divisors (see below), whose sum is σ = 139415517374. Its totient is φ = 25698712800.

The previous prime is 64246782079. The next prime is 64246782113. The reversal of 64246782100 is 128764246.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 680270724 + 63566511376 = 26082^2 + 252124^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 321233811 + ... + 321234010.

Almost surely, 2^64246782100 is an apocalyptic number.

It is an amenable number.

64246782100 is an abundant number, since it is smaller than the sum of its proper divisors (75168735274).

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

64246782100 is a wasteful number, since it uses less digits than its factorization.

64246782100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642467835 (or 642467828 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 64246782100 in words is "sixty-four billion, two hundred forty-six million, seven hundred eighty-two thousand, one hundred".