1779680446974 has 144 divisors (see below), whose sum is σ = 4326683560992. Its totient is φ = 527424213888.

The previous prime is 1779680446969. The next prime is 1779680447003. The reversal of 1779680446974 is 4796440869771.

1779680446974 is a `hidden beast` number, since 1 + 7 + 7 + 96 + 8 + 0 + 4 + 469 + 74 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7808724 + ... + 8033400.

It is an arithmetic number, because the mean of its divisors is an integer number (30046413618).

Almost surely, 2^{1779680446974} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1779680446974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2163341780496).

1779680446974 is an abundant number, since it is smaller than the sum of its proper divisors (2547003114018).

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

1779680446974 is a wasteful number, since it uses less digits than its factorization.

1779680446974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224799 (or 224777 counting only the distinct ones).

The product of its (nonzero) digits is 512096256, while the sum is 72.

The spelling of 1779680446974 in words is "one trillion, seven hundred seventy-nine billion, six hundred eighty million, four hundred forty-six thousand, nine hundred seventy-four".