501440636834 has 8 divisors (see below), whose sum is σ = 776424211968. Its totient is φ = 242632566180.

The previous prime is 501440636813. The next prime is 501440636857. The reversal of 501440636834 is 438636044105.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4043876042 + ... + 4043876165.

It is an arithmetic number, because the mean of its divisors is an integer number (97053026496).

Almost surely, 2^501440636834 is an apocalyptic number.

501440636834 is a deficient number, since it is larger than the sum of its proper divisors (274983575134).

501440636834 is a wasteful number, since it uses less digits than its factorization.

501440636834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8087752240.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 501440636834 in words is "five hundred one billion, four hundred forty million, six hundred thirty-six thousand, eight hundred thirty-four".