64834832390 has 16 divisors (see below), whose sum is σ = 123567563232. Its totient is φ = 24408407424.

The previous prime is 64834832389. The next prime is 64834832423. The reversal of 64834832390 is 9323843846.

It is a super-2 number, since 2×64834832390² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190690514 + ... + 190690853.

It is an arithmetic number, because the mean of its divisors is an integer number (7722972702).

Almost surely, 2^64834832390 is an apocalyptic number.

64834832390 is a deficient number, since it is larger than the sum of its proper divisors (58732730842).

64834832390 is a wasteful number, since it uses less digits than its factorization.

64834832390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381381391.

The product of its (nonzero) digits is 2985984, while the sum is 50.

The spelling of 64834832390 in words is "sixty-four billion, eight hundred thirty-four million, eight hundred thirty-two thousand, three hundred ninety".