671507542379 has 2 divisors, whose sum is σ = 671507542380. Its totient is φ = 671507542378.

The previous prime is 671507542333. The next prime is 671507542403. The reversal of 671507542379 is 973245705176.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671507542379 is a prime.

It is a super-3 number, since 3×671507542379³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (671503542379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335753771189 + 335753771190.

It is an arithmetic number, because the mean of its divisors is an integer number (335753771190).

Almost surely, 2^671507542379 is an apocalyptic number.

671507542379 is a deficient number, since it is larger than the sum of its proper divisors (1).

671507542379 is an equidigital number, since it uses as much as digits as its factorization.

671507542379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11113200, while the sum is 56.

The spelling of 671507542379 in words is "six hundred seventy-one billion, five hundred seven million, five hundred forty-two thousand, three hundred seventy-nine".