143902061081 has 4 divisors (see below), whose sum is σ = 143990946000. Its totient is φ = 143813176164.

The previous prime is 143902061077. The next prime is 143902061087. The reversal of 143902061081 is 180160209341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 143902061081 - 2² = 143902061077 is a prime.

It is a super-2 number, since 2×143902061081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143902061087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44440031 + ... + 44443268.

It is an arithmetic number, because the mean of its divisors is an integer number (35997736500).

Almost surely, 2^143902061081 is an apocalyptic number.

It is an amenable number.

143902061081 is a deficient number, since it is larger than the sum of its proper divisors (88884919).

143902061081 is an equidigital number, since it uses as much as digits as its factorization.

143902061081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88884918.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 143902061081 in words is "one hundred forty-three billion, nine hundred two million, sixty-one thousand, eighty-one".