671166015243701 has 4 divisors (see below), whose sum is σ = 671167266907500. Its totient is φ = 671164763579904.

The previous prime is 671166015243649. The next prime is 671166015243709. The reversal of 671166015243701 is 107342510661176.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 325780479372100 + 345385535871601 = 18049390^2 + 18584551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671166015243701 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 671166015243701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671166015243709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625027226 + ... + 626100123.

It is an arithmetic number, because the mean of its divisors is an integer number (167791816726875).

Almost surely, 2^{671166015243701} is an apocalyptic number.

It is an amenable number.

671166015243701 is a deficient number, since it is larger than the sum of its proper divisors (1251663799).

671166015243701 is a wasteful number, since it uses less digits than its factorization.

671166015243701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251663798.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 671166015243701 in words is "six hundred seventy-one trillion, one hundred sixty-six billion, fifteen million, two hundred forty-three thousand, seven hundred one".