1772820424378 has 16 divisors (see below), whose sum is σ = 2816265026880. Its totient is φ = 835215850656.

The previous prime is 1772820424373. The next prime is 1772820424391. The reversal of 1772820424378 is 8734240282771.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1772820424373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287605683 + ... + 287611846.

It is an arithmetic number, because the mean of its divisors is an integer number (176016564180).

Almost surely, 2^{1772820424378} is an apocalyptic number.

1772820424378 is a deficient number, since it is larger than the sum of its proper divisors (1043444602502).

1772820424378 is a wasteful number, since it uses less digits than its factorization.

1772820424378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575217621.

The product of its (nonzero) digits is 8429568, while the sum is 55.

The spelling of 1772820424378 in words is "one trillion, seven hundred seventy-two billion, eight hundred twenty million, four hundred twenty-four thousand, three hundred seventy-eight".