1311436405984 has 24 divisors (see below), whose sum is σ = 2717779395240. Its totient is φ = 621206718336.

The previous prime is 1311436405931. The next prime is 1311436405997. The reversal of 1311436405984 is 4895046341131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078483279 + ... + 1078484494.

It is an arithmetic number, because the mean of its divisors is an integer number (113240808135).

Almost surely, 2^{1311436405984} is an apocalyptic number.

It is an amenable number.

1311436405984 is an abundant number, since it is smaller than the sum of its proper divisors (1406342989256).

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

1311436405984 is a wasteful number, since it uses less digits than its factorization.

1311436405984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156967802 (or 2156967794 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 1311436405984 in words is "one trillion, three hundred eleven billion, four hundred thirty-six million, four hundred five thousand, nine hundred eighty-four".