7666253457 has 8 divisors (see below), whose sum is σ = 10351059840. Its totient is φ = 5046141360.

The previous prime is 7666253453. The next prime is 7666253467. The reversal of 7666253457 is 7543526667.

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

It is not a de Polignac number, because 7666253457 - 2² = 7666253453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7666253453) 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, 16173294 + ... + 16173767.

It is an arithmetic number, because the mean of its divisors is an integer number (1293882480).

Almost surely, 2^7666253457 is an apocalyptic number.

It is an amenable number.

7666253457 is a deficient number, since it is larger than the sum of its proper divisors (2684806383).

7666253457 is a wasteful number, since it uses less digits than its factorization.

7666253457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32347143.

The product of its digits is 6350400, while the sum is 51.

The square root of 7666253457 is about 87557.1439518215. The cubic root of 7666253457 is about 1971.7918074635.

The spelling of 7666253457 in words is "seven billion, six hundred sixty-six million, two hundred fifty-three thousand, four hundred fifty-seven".