671111802487 has 16 divisors (see below), whose sum is σ = 783541877760. Its totient is φ = 562828409568.

The previous prime is 671111802469. The next prime is 671111802511. The reversal of 671111802487 is 784208111176.

671111802487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 671111802487 - 2¹⁵ = 671111769719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671111802407) 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, 779589 + ... + 1396417.

It is an arithmetic number, because the mean of its divisors is an integer number (48971367360).

Almost surely, 2^671111802487 is an apocalyptic number.

671111802487 is a deficient number, since it is larger than the sum of its proper divisors (112430075273).

671111802487 is a wasteful number, since it uses less digits than its factorization.

671111802487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620190.

The product of its (nonzero) digits is 150528, while the sum is 46.

The spelling of 671111802487 in words is "six hundred seventy-one billion, one hundred eleven million, eight hundred two thousand, four hundred eighty-seven".