10143989856 has 768 divisors, whose sum is σ = 40927057920. Its totient is φ = 2358927360.

The previous prime is 10143989831. The next prime is 10143989899. The reversal of 10143989856 is 65898934101.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 31999810 + ... + 32000126.

It is an arithmetic number, because the mean of its divisors is an integer number (53290440).

Almost surely, 2^10143989856 is an apocalyptic number.

10143989856 is a gapful number since it is divisible by the number (16) 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 10143989856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20463528960).

10143989856 is an abundant number, since it is smaller than the sum of its proper divisors (30783068064).

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

10143989856 is a wasteful number, since it uses less digits than its factorization.

10143989856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

It can be divided in two parts, 101439 and 89856, that multiplied together give a square (9114902784 = 95472²).

The spelling of 10143989856 in words is "ten billion, one hundred forty-three million, nine hundred eighty-nine thousand, eight hundred fifty-six".