667231201157 has 4 divisors (see below), whose sum is σ = 667233167136. Its totient is φ = 667229235180.

The previous prime is 667231201127. The next prime is 667231201201. The reversal of 667231201157 is 751102132766.

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 667231201157 - 2¹⁰ = 667231200133 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 (667231201127) 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, 328769 + ... + 1201062.

It is an arithmetic number, because the mean of its divisors is an integer number (166808291784).

Almost surely, 2^667231201157 is an apocalyptic number.

It is an amenable number.

667231201157 is a deficient number, since it is larger than the sum of its proper divisors (1965979).

667231201157 is a wasteful number, since it uses less digits than its factorization.

667231201157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965978.

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 667231201157 in words is "six hundred sixty-seven billion, two hundred thirty-one million, two hundred one thousand, one hundred fifty-seven".