34771978878 has 192 divisors, whose sum is σ = 90348410880. Its totient is φ = 8833708800.

The previous prime is 34771978811. The next prime is 34771978921. The reversal of 34771978878 is 87887917743.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 31871113 + ... + 31872203.

It is an arithmetic number, because the mean of its divisors is an integer number (470564640).

Almost surely, 2^34771978878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34771978878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45174205440).

34771978878 is an abundant number, since it is smaller than the sum of its proper divisors (55576432002).

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

34771978878 is a wasteful number, since it uses less digits than its factorization.

34771978878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423 (or 1416 counting only the distinct ones).

The product of its digits is 132765696, while the sum is 69.

The spelling of 34771978878 in words is "thirty-four billion, seven hundred seventy-one million, nine hundred seventy-eight thousand, eight hundred seventy-eight".