64734240960 has 280 divisors, whose sum is σ = 236498130000. Its totient is φ = 16795662336.

The previous prime is 64734240953. The next prime is 64734241001. The reversal of 64734240960 is 6904243746.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 925291 + ... + 992789.

Almost surely, 2^64734240960 is an apocalyptic number.

64734240960 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 64734240960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118249065000).

64734240960 is an abundant number, since it is smaller than the sum of its proper divisors (171763889040).

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

64734240960 is a wasteful number, since it uses less digits than its factorization.

64734240960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67565 (or 67546 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 64734240960 in words is "sixty-four billion, seven hundred thirty-four million, two hundred forty thousand, nine hundred sixty".