7870428399888 has 160 divisors (see below), whose sum is σ = 23933660469120. Its totient is φ = 2467736616960.

The previous prime is 7870428399781. The next prime is 7870428399893. The reversal of 7870428399888 is 8889938240787.

7870428399888 is a `hidden beast` number, since 7 + 8 + 70 + 428 + 39 + 98 + 8 + 8 = 666.

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, 12523248 + ... + 13136688.

It is an arithmetic number, because the mean of its divisors is an integer number (149585377932).

Almost surely, 2^{7870428399888} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7870428399888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11966830234560).

7870428399888 is an abundant number, since it is smaller than the sum of its proper divisors (16063232069232).

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

7870428399888 is a wasteful number, since it uses less digits than its factorization.

7870428399888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615222 (or 615210 counting only the distinct ones).

The product of its (nonzero) digits is 3121348608, while the sum is 81.

The spelling of 7870428399888 in words is "seven trillion, eight hundred seventy billion, four hundred twenty-eight million, three hundred ninety-nine thousand, eight hundred eighty-eight".