671066242157 has 32 divisors (see below), whose sum is σ = 721370734080. Its totient is φ = 622366778880.

The previous prime is 671066242141. The next prime is 671066242159. The reversal of 671066242157 is 751242660176.

It is not a de Polignac number, because 671066242157 - 2⁴ = 671066242141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671066242159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 262441523 + ... + 262444079.

It is an arithmetic number, because the mean of its divisors is an integer number (22542835440).

Almost surely, 2^671066242157 is an apocalyptic number.

It is an amenable number.

671066242157 is a deficient number, since it is larger than the sum of its proper divisors (50304491923).

671066242157 is a wasteful number, since it uses less digits than its factorization.

671066242157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3621.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 671066242157 in words is "six hundred seventy-one billion, sixty-six million, two hundred forty-two thousand, one hundred fifty-seven".