64116849240 has 80 divisors (see below), whose sum is σ = 215503865280. Its totient is φ = 17097825600.

The previous prime is 64116849221. The next prime is 64116849257. The reversal of 64116849240 is 4294861146.

64116849240 is a `hidden beast` number, since 6 + 4 + 116 + 8 + 492 + 40 = 666.

It is a super-2 number, since 2×64116849240² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9891336 + ... + 9897815.

It is an arithmetic number, because the mean of its divisors is an integer number (2693798316).

Almost surely, 2^64116849240 is an apocalyptic number.

64116849240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64116849240 is an abundant number, since it is smaller than the sum of its proper divisors (151387016040).

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

64116849240 is a wasteful number, since it uses less digits than its factorization.

64116849240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19789174 (or 19789161 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 64116849240 in words is "sixty-four billion, one hundred sixteen million, eight hundred forty-nine thousand, two hundred forty".