1782678342045 has 32 divisors (see below), whose sum is σ = 3020247077760. Its totient is φ = 894781214720.

The previous prime is 1782678342031. The next prime is 1782678342091. The reversal of 1782678342045 is 5402438762871.

It is not a de Polignac number, because 1782678342045 - 2¹⁸ = 1782678079901 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4259830 + ... + 4659560.

It is an arithmetic number, because the mean of its divisors is an integer number (94382721180).

Almost surely, 2^{1782678342045} is an apocalyptic number.

1782678342045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1782678342045 is a deficient number, since it is larger than the sum of its proper divisors (1237568735715).

1782678342045 is a wasteful number, since it uses less digits than its factorization.

1782678342045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417245.

The product of its (nonzero) digits is 18063360, while the sum is 57.

The spelling of 1782678342045 in words is "one trillion, seven hundred eighty-two billion, six hundred seventy-eight million, three hundred forty-two thousand, forty-five".