671535585654 has 32 divisors (see below), whose sum is σ = 1345766286336. Its totient is φ = 223396276320.

The previous prime is 671535585653. The next prime is 671535585691. The reversal of 671535585654 is 456585535176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671535585653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10592109 + ... + 10655319.

It is an arithmetic number, because the mean of its divisors is an integer number (42055196448).

Almost surely, 2^671535585654 is an apocalyptic number.

671535585654 is an abundant number, since it is smaller than the sum of its proper divisors (674230700682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671535585654 is a wasteful number, since it uses less digits than its factorization.

671535585654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66740.

The product of its digits is 75600000, while the sum is 60.

The spelling of 671535585654 in words is "six hundred seventy-one billion, five hundred thirty-five million, five hundred eighty-five thousand, six hundred fifty-four".