424743961643 has 4 divisors (see below), whose sum is σ = 426900022560. Its totient is φ = 422587900728.

The previous prime is 424743961639. The next prime is 424743961727. The reversal of 424743961643 is 346169347424.

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

It is a cyclic number.

It is not a de Polignac number, because 424743961643 - 2² = 424743961639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424743963643) 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, 1078030163 + ... + 1078030556.

It is an arithmetic number, because the mean of its divisors is an integer number (106725005640).

Almost surely, 2^424743961643 is an apocalyptic number.

424743961643 is a deficient number, since it is larger than the sum of its proper divisors (2156060917).

424743961643 is a wasteful number, since it uses less digits than its factorization.

424743961643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156060916.

The product of its digits is 10450944, while the sum is 53.

The spelling of 424743961643 in words is "four hundred twenty-four billion, seven hundred forty-three million, nine hundred sixty-one thousand, six hundred forty-three".