1405018678044 has 48 divisors (see below), whose sum is σ = 3653918553600. Its totient is φ = 417590689536.

The previous prime is 1405018678031. The next prime is 1405018678067. The reversal of 1405018678044 is 4408768105041.

It is a junction number, because it is equal to n+sod(n) for n = 1405018677984 and 1405018678002.

It is a congruent number.

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, 181242084 + ... + 181249835.

It is an arithmetic number, because the mean of its divisors is an integer number (76123303200).

Almost surely, 2^{1405018678044} is an apocalyptic number.

It is an amenable number.

1405018678044 is an abundant number, since it is smaller than the sum of its proper divisors (2248899875556).

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

1405018678044 is a wasteful number, since it uses less digits than its factorization.

1405018678044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362491962 (or 362491960 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 48.

The spelling of 1405018678044 in words is "one trillion, four hundred five billion, eighteen million, six hundred seventy-eight thousand, forty-four".