876842864640 has 156 divisors (see below), whose sum is σ = 3039351509844. Its totient is φ = 233824714752.

The previous prime is 876842864587. The next prime is 876842864693. The reversal of 876842864640 is 46468248678.

876842864640 is a `hidden beast` number, since 8 + 76 + 84 + 28 + 6 + 464 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (876842864587) and next prime (876842864693).

It can be written as a sum of positive squares in 2 ways, for example, as 651210264576 + 225632600064 = 806976^2 + 475008^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2194269 + ... + 2562908.

It is an arithmetic number, because the mean of its divisors is an integer number (19483022499).

Almost surely, 2^876842864640 is an apocalyptic number.

876842864640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

876842864640 is an abundant number, since it is smaller than the sum of its proper divisors (2162508645204).

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

876842864640 is a wasteful number, since it uses less digits than its factorization.

876842864640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4757212 (or 4757187 counting only the distinct ones).

The product of its (nonzero) digits is 99090432, while the sum is 63.

The spelling of 876842864640 in words is "eight hundred seventy-six billion, eight hundred forty-two million, eight hundred sixty-four thousand, six hundred forty".