1478671761340 has 96 divisors (see below), whose sum is σ = 3328486318080. Its totient is φ = 550443565056.

The previous prime is 1478671761289. The next prime is 1478671761341. The reversal of 1478671761340 is 431671768741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1478671761341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4938021 + ... + 5228899.

It is an arithmetic number, because the mean of its divisors is an integer number (34671732480).

Almost surely, 2^{1478671761340} is an apocalyptic number.

1478671761340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1478671761340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1664243159040).

1478671761340 is an abundant number, since it is smaller than the sum of its proper divisors (1849814556740).

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

1478671761340 is a wasteful number, since it uses less digits than its factorization.

1478671761340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291211 (or 291209 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 55.

The spelling of 1478671761340 in words is "one trillion, four hundred seventy-eight billion, six hundred seventy-one million, seven hundred sixty-one thousand, three hundred forty".