1776774400345 has 16 divisors (see below), whose sum is σ = 2453073004800. Its totient is φ = 1210182675264.

The previous prime is 1776774400339. The next prime is 1776774400363. The reversal of 1776774400345 is 5430044776771.

It is a cyclic number.

It is not a de Polignac number, because 1776774400345 - 2¹¹ = 1776774398297 is a prime.

It is a super-2 number, since 2×1776774400345² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170347077 + ... + 170357506.

It is an arithmetic number, because the mean of its divisors is an integer number (153317062800).

Almost surely, 2^{1776774400345} is an apocalyptic number.

It is an amenable number.

1776774400345 is a deficient number, since it is larger than the sum of its proper divisors (676298604455).

1776774400345 is a wasteful number, since it uses less digits than its factorization.

1776774400345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340704744.

The product of its (nonzero) digits is 13829760, while the sum is 55.

The spelling of 1776774400345 in words is "one trillion, seven hundred seventy-six billion, seven hundred seventy-four million, four hundred thousand, three hundred forty-five".