64872610140 has 96 divisors (see below), whose sum is σ = 195908118336. Its totient is φ = 15944785920.

The previous prime is 64872610129. The next prime is 64872610163. The reversal of 64872610140 is 4101627846.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 463150 + ... + 586730.

It is an arithmetic number, because the mean of its divisors is an integer number (2040709566).

Almost surely, 2^64872610140 is an apocalyptic number.

64872610140 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 64872610140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97954059168).

64872610140 is an abundant number, since it is smaller than the sum of its proper divisors (131035508196).

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

64872610140 is a wasteful number, since it uses less digits than its factorization.

64872610140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124279 (or 124277 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 64872610140 in words is "sixty-four billion, eight hundred seventy-two million, six hundred ten thousand, one hundred forty".