6626341257 has 16 divisors (see below), whose sum is σ = 9312874560. Its totient is φ = 4179321792.

The previous prime is 6626341231. The next prime is 6626341273. The reversal of 6626341257 is 7521436266.

It is not a de Polignac number, because 6626341257 - 2⁷ = 6626341129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6626341217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37518 + ... + 121079.

It is an arithmetic number, because the mean of its divisors is an integer number (582054660).

Almost surely, 2^6626341257 is an apocalyptic number.

It is an amenable number.

6626341257 is a deficient number, since it is larger than the sum of its proper divisors (2686533303).

6626341257 is a wasteful number, since it uses less digits than its factorization.

6626341257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159352.

The product of its digits is 362880, while the sum is 42.

The square root of 6626341257 is about 81402.3418397776. The cubic root of 6626341257 is about 1878.2696143332.

The spelling of 6626341257 in words is "six billion, six hundred twenty-six million, three hundred forty-one thousand, two hundred fifty-seven".