671530436501 has 4 divisors (see below), whose sum is σ = 671544239712. Its totient is φ = 671516633292.

The previous prime is 671530436483. The next prime is 671530436543. The reversal of 671530436501 is 105634035176.

671530436501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-671530436501 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 (671535436501) 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, 6828371 + ... + 6926016.

It is an arithmetic number, because the mean of its divisors is an integer number (167886059928).

Almost surely, 2^671530436501 is an apocalyptic number.

It is an amenable number.

671530436501 is a deficient number, since it is larger than the sum of its proper divisors (13803211).

671530436501 is a wasteful number, since it uses less digits than its factorization.

671530436501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13803210.

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 671530436501 in words is "six hundred seventy-one billion, five hundred thirty million, four hundred thirty-six thousand, five hundred one".