671491013686371 has 24 divisors (see below), whose sum is σ = 971515224180384. Its totient is φ = 446929727207040.

The previous prime is 671491013686369. The next prime is 671491013686373. The reversal of 671491013686371 is 173686310194176.

671491013686371 is a `hidden beast` number, since 6 + 7 + 1 + 49 + 10 + 136 + 86 + 371 = 666.

It is an interprime number because it is at equal distance from previous prime (671491013686369) and next prime (671491013686373).

It is not a de Polignac number, because 671491013686371 - 2¹ = 671491013686369 is a prime.

It is a super-2 number, since 2×671491013686371² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 671491013686299 and 671491013686308.

It is not an unprimeable number, because it can be changed into a prime (671491013686373) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 487926885 + ... + 489301161.

It is an arithmetic number, because the mean of its divisors is an integer number (40479801007516).

Almost surely, 2^{671491013686371} is an apocalyptic number.

671491013686371 is a deficient number, since it is larger than the sum of its proper divisors (300024210494013).

671491013686371 is a wasteful number, since it uses less digits than its factorization.

671491013686371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462891 (or 1462888 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 63.

The spelling of 671491013686371 in words is "six hundred seventy-one trillion, four hundred ninety-one billion, thirteen million, six hundred eighty-six thousand, three hundred seventy-one".