17780064382772 has 24 divisors (see below), whose sum is σ = 31188589149312. Its totient is φ = 8869040611200.

The previous prime is 17780064382763. The next prime is 17780064382793. The reversal of 17780064382772 is 27728346008771.

It is a super-2 number, since 2×17780064382772² (a number of 27 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, 44405747 + ... + 44804357.

It is an arithmetic number, because the mean of its divisors is an integer number (1299524547888).

Almost surely, 2^{17780064382772} is an apocalyptic number.

It is an amenable number.

17780064382772 is a deficient number, since it is larger than the sum of its proper divisors (13408524766540).

17780064382772 is a wasteful number, since it uses less digits than its factorization.

17780064382772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424919 (or 424917 counting only the distinct ones).

The product of its (nonzero) digits is 44255232, while the sum is 62.

The spelling of 17780064382772 in words is "seventeen trillion, seven hundred eighty billion, sixty-four million, three hundred eighty-two thousand, seven hundred seventy-two".