1681780004374 has 16 divisors (see below), whose sum is σ = 2524922730000. Its totient is φ = 840139350624.

The previous prime is 1681780004363. The next prime is 1681780004381. The reversal of 1681780004374 is 4734000871861.

It is a super-2 number, since 2×1681780004374² (a number of 25 digits) contains 22 as substring.

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, 13720792 + ... + 13842820.

It is an arithmetic number, because the mean of its divisors is an integer number (157807670625).

Almost surely, 2^{1681780004374} is an apocalyptic number.

1681780004374 is a deficient number, since it is larger than the sum of its proper divisors (843142725626).

1681780004374 is a wasteful number, since it uses less digits than its factorization.

1681780004374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128127.

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 1681780004374 in words is "one trillion, six hundred eighty-one billion, seven hundred eighty million, four thousand, three hundred seventy-four".