642876917760 has 1728 divisors, whose sum is σ = 2982134413440. Its totient is φ = 124004597760.

The previous prime is 642876917713. The next prime is 642876917789. The reversal of 642876917760 is 67719678246.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 8806533084 + ... + 8806533156.

It is an arithmetic number, because the mean of its divisors is an integer number (1725772230).

Almost surely, 2^642876917760 is an apocalyptic number.

642876917760 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 642876917760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1491067206720).

642876917760 is an abundant number, since it is smaller than the sum of its proper divisors (2339257495680).

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

642876917760 is a wasteful number, since it uses less digits than its factorization.

642876917760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 63.

The spelling of 642876917760 in words is "six hundred forty-two billion, eight hundred seventy-six million, nine hundred seventeen thousand, seven hundred sixty".