7871545107870 has 32 divisors (see below), whose sum is σ = 19352481634080. Its totient is φ = 2047881653760.

The previous prime is 7871545107863. The next prime is 7871545107889. The reversal of 7871545107870 is 787015451787.

It is a happy number.

It is a super-2 number, since 2×7871545107870² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3199813855 + ... + 3199816314.

It is an arithmetic number, because the mean of its divisors is an integer number (604765051065).

Almost surely, 2^{7871545107870} is an apocalyptic number.

7871545107870 is an abundant number, since it is smaller than the sum of its proper divisors (11480936526210).

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

7871545107870 is a wasteful number, since it uses less digits than its factorization.

7871545107870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6399630220.

The product of its (nonzero) digits is 15366400, while the sum is 60.

The spelling of 7871545107870 in words is "seven trillion, eight hundred seventy-one billion, five hundred forty-five million, one hundred seven thousand, eight hundred seventy".