143015981640 has 128 divisors (see below), whose sum is σ = 491191983360. Its totient is φ = 32632602624.

The previous prime is 143015981627. The next prime is 143015981659. The reversal of 143015981640 is 46189510341.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 143015981592 and 143015981601.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 337144 + ... + 632216.

It is an arithmetic number, because the mean of its divisors is an integer number (3837437370).

Almost surely, 2^143015981640 is an apocalyptic number.

143015981640 is a gapful number since it is divisible by the number (10) 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 143015981640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245595991680).

143015981640 is an abundant number, since it is smaller than the sum of its proper divisors (348176001720).

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

143015981640 is a wasteful number, since it uses less digits than its factorization.

143015981640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295671 (or 295667 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 143015981640 in words is "one hundred forty-three billion, fifteen million, nine hundred eighty-one thousand, six hundred forty".