671480543698 has 16 divisors (see below), whose sum is σ = 1018639918296. Its totient is φ = 331955349120.

The previous prime is 671480543659. The next prime is 671480543707. The reversal of 671480543698 is 896345084176.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 605833392609 + 65647151089 = 778353^2 + 256217^2 .

It is a super-2 number, since 2×671480543698² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5298411 + ... + 5423662.

Almost surely, 2^671480543698 is an apocalyptic number.

671480543698 is a deficient number, since it is larger than the sum of its proper divisors (347159374598).

671480543698 is a wasteful number, since it uses less digits than its factorization.

671480543698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10722429.

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 671480543698 in words is "six hundred seventy-one billion, four hundred eighty million, five hundred forty-three thousand, six hundred ninety-eight".