13861778070 has 288 divisors, whose sum is σ = 41809450752. Its totient is φ = 2931489792.

The previous prime is 13861778057. The next prime is 13861778089. The reversal of 13861778070 is 7087716831.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 143 ways as a sum of consecutive naturals, for example, 28463367 + ... + 28463853.

It is an arithmetic number, because the mean of its divisors is an integer number (145171704).

Almost surely, 2^13861778070 is an apocalyptic number.

13861778070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13861778070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20904725376).

13861778070 is an abundant number, since it is smaller than the sum of its proper divisors (27947672682).

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

13861778070 is a wasteful number, since it uses less digits than its factorization.

13861778070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 48.

The spelling of 13861778070 in words is "thirteen billion, eight hundred sixty-one million, seven hundred seventy-eight thousand, seventy".