143501561856 has 117 divisors (see below), whose sum is σ = 414719659549. Its totient is φ = 47809609728.

The previous prime is 143501561849. The next prime is 143501561869. The reversal of 143501561856 is 658165105341.

It is a happy number.

The square root of 143501561856 is 378816.

It is a perfect power (a square), and thus also a powerful number.

143501561856 is a `hidden beast` number, since 1 + 4 + 3 + 5 + 0 + 1 + 561 + 85 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 30863462400 + 112638099456 = 175680^2 + 335616^2 .

It is a super-2 number, since 2×143501561856² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 72731686 + ... + 72733658.

Almost surely, 2^143501561856 is an apocalyptic number.

143501561856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

143501561856 is the 378816-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143501561856

143501561856 is an abundant number, since it is smaller than the sum of its proper divisors (271218097693).

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

143501561856 is an frugal number, since it uses more digits than its factorization.

143501561856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976 (or 1978 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 143501561856 in words is "one hundred forty-three billion, five hundred one million, five hundred sixty-one thousand, eight hundred fifty-six".