64849990260 has 96 divisors (see below), whose sum is σ = 198658801152. Its totient is φ = 15675848320.

The previous prime is 64849990229. The next prime is 64849990273. The reversal of 64849990260 is 6209994846.

64849990260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 64849990260.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87439 + ... + 370601.

It is an arithmetic number, because the mean of its divisors is an integer number (2069362512).

Almost surely, 2^64849990260 is an apocalyptic number.

64849990260 is a gapful number since it is divisible by the number (60) 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 64849990260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99329400576).

64849990260 is an abundant number, since it is smaller than the sum of its proper divisors (133808810892).

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

64849990260 is a wasteful number, since it uses less digits than its factorization.

64849990260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283533 (or 283531 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 57.

The spelling of 64849990260 in words is "sixty-four billion, eight hundred forty-nine million, nine hundred ninety thousand, two hundred sixty".