6457533666261 has 8 divisors (see below), whose sum is σ = 8610574704480. Its totient is φ = 4304757536112.

The previous prime is 6457533666253. The next prime is 6457533666293. The reversal of 6457533666261 is 1626663357546.

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

It is not a de Polignac number, because 6457533666261 - 2³ = 6457533666253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6457533666195 and 6457533666204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6457533666211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66170131 + ... + 66267648.

It is an arithmetic number, because the mean of its divisors is an integer number (1076321838060).

Almost surely, 2^{6457533666261} is an apocalyptic number.

It is an amenable number.

6457533666261 is a deficient number, since it is larger than the sum of its proper divisors (2153041038219).

6457533666261 is a wasteful number, since it uses less digits than its factorization.

6457533666261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132454035.

The product of its digits is 97977600, while the sum is 60.

The spelling of 6457533666261 in words is "six trillion, four hundred fifty-seven billion, five hundred thirty-three million, six hundred sixty-six thousand, two hundred sixty-one".