143421644334465 has 96 divisors (see below), whose sum is σ = 289472881950720. Its totient is φ = 64337109452928.

The previous prime is 143421644334457. The next prime is 143421644334499. The reversal of 143421644334465 is 564433446124341.

It is a happy number.

143421644334465 is a `hidden beast` number, since 1 + 4 + 3 + 4 + 2 + 164 + 4 + 33 + 446 + 5 = 666.

It is not a de Polignac number, because 143421644334465 - 2³ = 143421644334457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13622817 + ... + 21735326.

It is an arithmetic number, because the mean of its divisors is an integer number (3015342520320).

Almost surely, 2^{143421644334465} is an apocalyptic number.

143421644334465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

143421644334465 is an abundant number, since it is smaller than the sum of its proper divisors (146051237616255).

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

143421644334465 is a wasteful number, since it uses less digits than its factorization.

143421644334465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35358403 (or 35358400 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 54.

The spelling of 143421644334465 in words is "one hundred forty-three trillion, four hundred twenty-one billion, six hundred forty-four million, three hundred thirty-four thousand, four hundred sixty-five".