2078785027890 has 160 divisors (see below), whose sum is σ = 5886478509120. Its totient is φ = 524928802176.

The previous prime is 2078785027877. The next prime is 2078785027967. The reversal of 2078785027890 is 987205878702.

2078785027890 is a `hidden beast` number, since 207 + 8 + 78 + 5 + 0 + 278 + 90 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 35259817 + ... + 35318723.

It is an arithmetic number, because the mean of its divisors is an integer number (36790490682).

Almost surely, 2^{2078785027890} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2078785027890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2943239254560).

2078785027890 is an abundant number, since it is smaller than the sum of its proper divisors (3807693481230).

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

2078785027890 is a wasteful number, since it uses less digits than its factorization.

2078785027890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61238 (or 61229 counting only the distinct ones).

The product of its (nonzero) digits is 31610880, while the sum is 63.

The spelling of 2078785027890 in words is "two trillion, seventy-eight billion, seven hundred eighty-five million, twenty-seven thousand, eight hundred ninety".