6616737157 has 4 divisors (see below), whose sum is σ = 6715494496. Its totient is φ = 6517979820.

The previous prime is 6616737143. The next prime is 6616737191. The reversal of 6616737157 is 7517376166.

It is a happy number.

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 6616737157 - 2¹¹ = 6616735109 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 6616737157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6616731157) 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, 49378569 + ... + 49378702.

It is an arithmetic number, because the mean of its divisors is an integer number (1678873624).

Almost surely, 2^6616737157 is an apocalyptic number.

6616737157 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

6616737157 is a deficient number, since it is larger than the sum of its proper divisors (98757339).

6616737157 is an equidigital number, since it uses as much as digits as its factorization.

6616737157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98757338.

The product of its digits is 1111320, while the sum is 49.

The square root of 6616737157 is about 81343.3289028670. The cubic root of 6616737157 is about 1877.3617321549.

The spelling of 6616737157 in words is "six billion, six hundred sixteen million, seven hundred thirty-seven thousand, one hundred fifty-seven".