2878158211720 has 128 divisors (see below), whose sum is σ = 7219086819840. Its totient is φ = 1023737610240.

The previous prime is 2878158211699. The next prime is 2878158211729. The reversal of 2878158211720 is 271128518782.

It is not an unprimeable number, because it can be changed into a prime (2878158211729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36212344 + ... + 36291736.

It is an arithmetic number, because the mean of its divisors is an integer number (56399115780).

Almost surely, 2^{2878158211720} is an apocalyptic number.

2878158211720 is a gapful number since it is divisible by the number (20) 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 2878158211720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3609543409920).

2878158211720 is an abundant number, since it is smaller than the sum of its proper divisors (4340928608120).

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

2878158211720 is a wasteful number, since it uses less digits than its factorization.

2878158211720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81215 (or 81211 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 52.

The spelling of 2878158211720 in words is "two trillion, eight hundred seventy-eight billion, one hundred fifty-eight million, two hundred eleven thousand, seven hundred twenty".