6618547457 has 32 divisors (see below), whose sum is σ = 7599513600. Its totient is φ = 5724131328.

The previous prime is 6618547393. The next prime is 6618547477. The reversal of 6618547457 is 7547458166.

It is a cyclic number.

It is not a de Polignac number, because 6618547457 - 2⁶ = 6618547393 is a prime.

It is a super-2 number, since 2×6618547457² = 87610340881122333698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6618547399 and 6618547408.

It is not an unprimeable number, because it can be changed into a prime (6618547477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5174144 + ... + 5175422.

It is an arithmetic number, because the mean of its divisors is an integer number (237484800).

Almost surely, 2^6618547457 is an apocalyptic number.

It is an amenable number.

6618547457 is a deficient number, since it is larger than the sum of its proper divisors (980966143).

6618547457 is a wasteful number, since it uses less digits than its factorization.

6618547457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785.

The product of its digits is 5644800, while the sum is 53.

The square root of 6618547457 is about 81354.4556677752. The cubic root of 6618547457 is about 1877.5329282175.

The spelling of 6618547457 in words is "six billion, six hundred eighteen million, five hundred forty-seven thousand, four hundred fifty-seven".