6497759225638 has 8 divisors (see below), whose sum is σ = 9973304858088. Its totient is φ = 3173324272944.

The previous prime is 6497759225497. The next prime is 6497759225719. The reversal of 6497759225638 is 8365229577946.

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

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, 37777669831 + ... + 37777670002.

It is an arithmetic number, because the mean of its divisors is an integer number (1246663107261).

Almost surely, 2^{6497759225638} is an apocalyptic number.

6497759225638 is a deficient number, since it is larger than the sum of its proper divisors (3475545632450).

6497759225638 is a wasteful number, since it uses less digits than its factorization.

6497759225638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75555339878.

The product of its digits is 1371686400, while the sum is 73.

The spelling of 6497759225638 in words is "six trillion, four hundred ninety-seven billion, seven hundred fifty-nine million, two hundred twenty-five thousand, six hundred thirty-eight".