1671211221708 has 48 divisors (see below), whose sum is σ = 4475210019840. Its totient is φ = 475491053184.

The previous prime is 1671211221689. The next prime is 1671211221761. The reversal of 1671211221708 is 8071221121761.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41602041 + ... + 41642192.

It is an arithmetic number, because the mean of its divisors is an integer number (93233542080).

Almost surely, 2^{1671211221708} is an apocalyptic number.

It is an amenable number.

1671211221708 is an abundant number, since it is smaller than the sum of its proper divisors (2803998798132).

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

1671211221708 is a wasteful number, since it uses less digits than its factorization.

1671211221708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83244486 (or 83244484 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 39.

The spelling of 1671211221708 in words is "one trillion, six hundred seventy-one billion, two hundred eleven million, two hundred twenty-one thousand, seven hundred eight".