1780306776042 has 24 divisors (see below), whose sum is σ = 3614550278976. Its totient is φ = 584578335528.

The previous prime is 1780306776023. The next prime is 1780306776043. The reversal of 1780306776042 is 2406776030871.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1780306776043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33022498 + ... + 33076365.

It is an arithmetic number, because the mean of its divisors is an integer number (150606261624).

Almost surely, 2^{1780306776042} is an apocalyptic number.

1780306776042 is an abundant number, since it is smaller than the sum of its proper divisors (1834243502934).

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

1780306776042 is an equidigital number, since it uses as much as digits as its factorization.

1780306776042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66099002 (or 66098935 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 51.

The spelling of 1780306776042 in words is "one trillion, seven hundred eighty billion, three hundred six million, seven hundred seventy-six thousand, forty-two".