6561726050678 has 32 divisors (see below), whose sum is σ = 10904968465920. Its totient is φ = 2945388350080.

The previous prime is 6561726050611. The next prime is 6561726050681. The reversal of 6561726050678 is 8760506271656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11405828 + ... + 11967303.

It is an arithmetic number, because the mean of its divisors is an integer number (340780264560).

Almost surely, 2^{6561726050678} is an apocalyptic number.

6561726050678 is a deficient number, since it is larger than the sum of its proper divisors (4343242415242).

6561726050678 is a wasteful number, since it uses less digits than its factorization.

6561726050678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23373532.

The product of its (nonzero) digits is 25401600, while the sum is 59.

The spelling of 6561726050678 in words is "six trillion, five hundred sixty-one billion, seven hundred twenty-six million, fifty thousand, six hundred seventy-eight".