6445263542 has 8 divisors (see below), whose sum is σ = 9694239456. Its totient is φ = 3213850392.

The previous prime is 6445263529. The next prime is 6445263553. The reversal of 6445263542 is 2453625446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6445263542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4389773 + ... + 4391240.

It is an arithmetic number, because the mean of its divisors is an integer number (1211779932).

Almost surely, 2^6445263542 is an apocalyptic number.

6445263542 is a deficient number, since it is larger than the sum of its proper divisors (3248975914).

6445263542 is a wasteful number, since it uses less digits than its factorization.

6445263542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8781382.

The product of its digits is 691200, while the sum is 41.

The square root of 6445263542 is about 80282.3987060676. The cubic root of 6445263542 is about 1861.0022291679.

Adding to 6445263542 its reverse (2453625446), we get a palindrome (8898888988).

The spelling of 6445263542 in words is "six billion, four hundred forty-five million, two hundred sixty-three thousand, five hundred forty-two".