6506501503438 has 4 divisors (see below), whose sum is σ = 9759752255160. Its totient is φ = 3253250751718.

The previous prime is 6506501503433. The next prime is 6506501503471. The reversal of 6506501503438 is 8343051056056.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6506501503433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1626625375858 + ... + 1626625375861.

It is an arithmetic number, because the mean of its divisors is an integer number (2439938063790).

Almost surely, 2^{6506501503438} is an apocalyptic number.

6506501503438 is a deficient number, since it is larger than the sum of its proper divisors (3253250751722).

6506501503438 is a wasteful number, since it uses less digits than its factorization.

6506501503438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253250751721.

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 6506501503438 in words is "six trillion, five hundred six billion, five hundred one million, five hundred three thousand, four hundred thirty-eight".