1955671865628 has 24 divisors (see below), whose sum is σ = 4914252380688. Its totient is φ = 601745189376.

The previous prime is 1955671865611. The next prime is 1955671865633. The reversal of 1955671865628 is 8265681765591.

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, 6268178901 + ... + 6268179212.

It is an arithmetic number, because the mean of its divisors is an integer number (204760515862).

Almost surely, 2^{1955671865628} is an apocalyptic number.

It is an amenable number.

1955671865628 is an abundant number, since it is smaller than the sum of its proper divisors (2958580515060).

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

1955671865628 is a wasteful number, since it uses less digits than its factorization.

1955671865628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12536358133 (or 12536358131 counting only the distinct ones).

The product of its digits is 217728000, while the sum is 69.

The spelling of 1955671865628 in words is "one trillion, nine hundred fifty-five billion, six hundred seventy-one million, eight hundred sixty-five thousand, six hundred twenty-eight".