7666353157 has 4 divisors (see below), whose sum is σ = 7667057440. Its totient is φ = 7665648876.

The previous prime is 7666353131. The next prime is 7666353179. The reversal of 7666353157 is 7513536667.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7666353157 - 2²³ = 7657964549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7666353157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7666353197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335553 + ... + 357670.

It is an arithmetic number, because the mean of its divisors is an integer number (1916764360).

Almost surely, 2^7666353157 is an apocalyptic number.

It is an amenable number.

7666353157 is a deficient number, since it is larger than the sum of its proper divisors (704283).

7666353157 is a wasteful number, since it uses less digits than its factorization.

7666353157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704282.

The product of its digits is 2381400, while the sum is 49.

The square root of 7666353157 is about 87557.7132924336. The cubic root of 7666353157 is about 1971.8003551760.

The spelling of 7666353157 in words is "seven billion, six hundred sixty-six million, three hundred fifty-three thousand, one hundred fifty-seven".