671011507215223 has 4 divisors (see below), whose sum is σ = 671014792649448. Its totient is φ = 671008221781000.

The previous prime is 671011507215199. The next prime is 671011507215241. The reversal of 671011507215223 is 322512705110176.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671011507215223 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 671011507215223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671011504215223) 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, 1642410736 + ... + 1642819237.

It is an arithmetic number, because the mean of its divisors is an integer number (167753698162362).

Almost surely, 2^{671011507215223} is an apocalyptic number.

671011507215223 is a deficient number, since it is larger than the sum of its proper divisors (3285434225).

671011507215223 is a wasteful number, since it uses less digits than its factorization.

671011507215223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3285434224.

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 671011507215223 in words is "six hundred seventy-one trillion, eleven billion, five hundred seven million, two hundred fifteen thousand, two hundred twenty-three".