64535587850 has 24 divisors (see below), whose sum is σ = 127097147628. Its totient is φ = 24295750400.

The previous prime is 64535587819. The next prime is 64535587859. The reversal of 64535587850 is 5878553546.

It is a happy number.

64535587850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 30411523321 + 34124064529 = 174389^2 + 184727^2 .

It is not an unprimeable number, because it can be changed into a prime (64535587859) 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, 37961261 + ... + 37962960.

Almost surely, 2^64535587850 is an apocalyptic number.

64535587850 is a deficient number, since it is larger than the sum of its proper divisors (62561559778).

64535587850 is a wasteful number, since it uses less digits than its factorization.

64535587850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75924250 (or 75924245 counting only the distinct ones).

The product of its (nonzero) digits is 20160000, while the sum is 56.

The spelling of 64535587850 in words is "sixty-four billion, five hundred thirty-five million, five hundred eighty-seven thousand, eight hundred fifty".