13431450277784 has 96 divisors (see below), whose sum is σ = 31837566663840. Its totient is φ = 5199700746240.

The previous prime is 13431450277783. The next prime is 13431450277793. The reversal of 13431450277784 is 48777205413431.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13431450277783) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5248937 + ... + 7376600.

It is an arithmetic number, because the mean of its divisors is an integer number (331641319415).

Almost surely, 2^{13431450277784} is an apocalyptic number.

13431450277784 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13431450277784 is an abundant number, since it is smaller than the sum of its proper divisors (18406116386056).

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

13431450277784 is a wasteful number, since it uses less digits than its factorization.

13431450277784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12625729 (or 12625714 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 56.

The spelling of 13431450277784 in words is "thirteen trillion, four hundred thirty-one billion, four hundred fifty million, two hundred seventy-seven thousand, seven hundred eighty-four".