1774731395072 has 228 divisors, whose sum is σ = 3860178380640. Its totient is φ = 812981944320.

The previous prime is 1774731395069. The next prime is 1774731395081. The reversal of 1774731395072 is 2705931374771.

It is a junction number, because it is equal to n+sod(n) for n = 1774731394999 and 1774731395017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22464954329 + ... + 22464954407.

Almost surely, 2^{1774731395072} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1774731395072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1930089190320).

1774731395072 is an abundant number, since it is smaller than the sum of its proper divisors (2085446985568).

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

1774731395072 is an frugal number, since it uses more digits than its factorization.

1774731395072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 7779240, while the sum is 56.

The spelling of 1774731395072 in words is "one trillion, seven hundred seventy-four billion, seven hundred thirty-one million, three hundred ninety-five thousand, seventy-two".