671434689486 has 16 divisors (see below), whose sum is σ = 1464948413568. Its totient is φ = 203465057400.

The previous prime is 671434689469. The next prime is 671434689493. The reversal of 671434689486 is 684986434176.

It is a super-2 number, since 2×671434689486² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66), and also a Moran number because the ratio is a prime number: 10173252871 = 671434689486 / (6 + 7 + 1 + 4 + 3 + 4 + 6 + 8 + 9 + 4 + 8 + 6).

It is a congruent number.

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, 5086626370 + ... + 5086626501.

It is an arithmetic number, because the mean of its divisors is an integer number (91559275848).

Almost surely, 2^671434689486 is an apocalyptic number.

671434689486 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

671434689486 is an abundant number, since it is smaller than the sum of its proper divisors (793513724082).

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

671434689486 is a wasteful number, since it uses less digits than its factorization.

671434689486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10173252887.

The product of its digits is 167215104, while the sum is 66.

The spelling of 671434689486 in words is "six hundred seventy-one billion, four hundred thirty-four million, six hundred eighty-nine thousand, four hundred eighty-six".