7870911402978 has 96 divisors (see below), whose sum is σ = 19135072599552. Its totient is φ = 2321791776000.

The previous prime is 7870911402931. The next prime is 7870911403001. The reversal of 7870911402978 is 8792041190787.

7870911402978 is a `hidden beast` number, since 7 + 8 + 70 + 91 + 1 + 402 + 9 + 78 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4294123 + ... + 5846478.

It is an arithmetic number, because the mean of its divisors is an integer number (199323672912).

Almost surely, 2^{7870911402978} is an apocalyptic number.

7870911402978 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

7870911402978 is an abundant number, since it is smaller than the sum of its proper divisors (11264161196574).

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

7870911402978 is a wasteful number, since it uses less digits than its factorization.

7870911402978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10140760 (or 10140757 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 63.

The spelling of 7870911402978 in words is "seven trillion, eight hundred seventy billion, nine hundred eleven million, four hundred two thousand, nine hundred seventy-eight".