6471177157 has 2 divisors, whose sum is σ = 6471177158. Its totient is φ = 6471177156.

The previous prime is 6471177151. The next prime is 6471177179. The reversal of 6471177157 is 7517711746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5232207556 + 1238969601 = 72334^2 + 35199^2 .

It is a cyclic number.

It is not a de Polignac number, because 6471177157 - 2²⁷ = 6336959429 is a prime.

It is a super-2 number, since 2×6471177157² = 83752267594557205298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6471177151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3235588578 + 3235588579.

It is an arithmetic number, because the mean of its divisors is an integer number (3235588579).

Almost surely, 2^6471177157 is an apocalyptic number.

It is an amenable number.

6471177157 is a deficient number, since it is larger than the sum of its proper divisors (1).

6471177157 is an equidigital number, since it uses as much as digits as its factorization.

6471177157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288120, while the sum is 46.

The square root of 6471177157 is about 80443.6271994246. The cubic root of 6471177157 is about 1863.4929888775.

The spelling of 6471177157 in words is "six billion, four hundred seventy-one million, one hundred seventy-seven thousand, one hundred fifty-seven".