1376486721456 has 240 divisors, whose sum is σ = 4556346732288. Its totient is φ = 354057177600.

The previous prime is 1376486721427. The next prime is 1376486721497. The reversal of 1376486721456 is 6541276846731.

It is a self number, because there is not a number n which added to its sum of digits gives 1376486721456.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2406546 + ... + 2923086.

Almost surely, 2^{1376486721456} is an apocalyptic number.

1376486721456 is a gapful number since it is divisible by the number (16) 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 1376486721456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2278173366144).

1376486721456 is an abundant number, since it is smaller than the sum of its proper divisors (3179860010832).

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

1376486721456 is a wasteful number, since it uses less digits than its factorization.

1376486721456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516680 (or 516667 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 60.

The spelling of 1376486721456 in words is "one trillion, three hundred seventy-six billion, four hundred eighty-six million, seven hundred twenty-one thousand, four hundred fifty-six".