143711213978 has 4 divisors (see below), whose sum is σ = 215566820970. Its totient is φ = 71855606988.

The previous prime is 143711213953. The next prime is 143711213981. The reversal of 143711213978 is 879312117341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 141566320009 + 2144893969 = 376253^2 + 46313^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35927803493 + ... + 35927803496.

Almost surely, 2^143711213978 is an apocalyptic number.

143711213978 is a deficient number, since it is larger than the sum of its proper divisors (71855606992).

143711213978 is an equidigital number, since it uses as much as digits as its factorization.

143711213978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71855606991.

The product of its digits is 254016, while the sum is 47.

The spelling of 143711213978 in words is "one hundred forty-three billion, seven hundred eleven million, two hundred thirteen thousand, nine hundred seventy-eight".