1405018678045 has 32 divisors (see below), whose sum is σ = 1777014451296. Its totient is φ = 1065043353600.

The previous prime is 1405018678031. The next prime is 1405018678067. The reversal of 1405018678045 is 5408768105041.

It can be written as a sum of positive squares in 16 ways, for example, as 259403806489 + 1145614871556 = 509317^2 + 1070334^2 .

It is not a de Polignac number, because 1405018678045 - 2¹⁷ = 1405018546973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1405018678045.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4058565 + ... + 4391125.

It is an arithmetic number, because the mean of its divisors is an integer number (55531701603).

Almost surely, 2^{1405018678045} is an apocalyptic number.

It is an amenable number.

1405018678045 is a deficient number, since it is larger than the sum of its proper divisors (371995773251).

1405018678045 is a wasteful number, since it uses less digits than its factorization.

1405018678045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333201.

The product of its (nonzero) digits is 1075200, while the sum is 49.

The spelling of 1405018678045 in words is "one trillion, four hundred five billion, eighteen million, six hundred seventy-eight thousand, forty-five".