83464790640 has 320 divisors, whose sum is σ = 324381238272. Its totient is φ = 17246822400.

The previous prime is 83464790611. The next prime is 83464790657. The reversal of 83464790640 is 4609746438.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3332404 + ... + 3357356.

Almost surely, 2^83464790640 is an apocalyptic number.

83464790640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83464790640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162190619136).

83464790640 is an abundant number, since it is smaller than the sum of its proper divisors (240916447632).

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

83464790640 is a wasteful number, since it uses less digits than its factorization.

83464790640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25168 (or 25162 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 51.

The spelling of 83464790640 in words is "eighty-three billion, four hundred sixty-four million, seven hundred ninety thousand, six hundred forty".