6155791657 has 2 divisors, whose sum is σ = 6155791658. Its totient is φ = 6155791656.

The previous prime is 6155791651. The next prime is 6155791679. The reversal of 6155791657 is 7561975516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5692853401 + 462938256 = 75451^2 + 21516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6155791657 is a prime.

It is not a weakly prime, because it can be changed into another prime (6155791651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3077895828 + 3077895829.

It is an arithmetic number, because the mean of its divisors is an integer number (3077895829).

Almost surely, 2^6155791657 is an apocalyptic number.

It is an amenable number.

6155791657 is a deficient number, since it is larger than the sum of its proper divisors (1).

6155791657 is an equidigital number, since it uses as much as digits as its factorization.

6155791657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1984500, while the sum is 52.

The square root of 6155791657 is about 78458.8532735471. The cubic root of 6155791657 is about 1832.7137474316.

The spelling of 6155791657 in words is "six billion, one hundred fifty-five million, seven hundred ninety-one thousand, six hundred fifty-seven".