642513257224 has 16 divisors (see below), whose sum is σ = 1243574046720. Its totient is φ = 310893511440.

The previous prime is 642513257203. The next prime is 642513257249. The reversal of 642513257224 is 422752315246.

It is a happy number.

It is a super-3 number, since 3×642513257224³ (a number of 36 digits) contains 333 as substring.

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, 1295389384 + ... + 1295389879.

It is an arithmetic number, because the mean of its divisors is an integer number (77723377920).

Almost surely, 2^642513257224 is an apocalyptic number.

It is an amenable number.

642513257224 is a deficient number, since it is larger than the sum of its proper divisors (601060789496).

642513257224 is a wasteful number, since it uses less digits than its factorization.

642513257224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590779300 (or 2590779296 counting only the distinct ones).

The product of its digits is 806400, while the sum is 43.

The spelling of 642513257224 in words is "six hundred forty-two billion, five hundred thirteen million, two hundred fifty-seven thousand, two hundred twenty-four".