1421328376976 has 80 divisors (see below), whose sum is σ = 2869917318000. Its totient is φ = 681074688000.

The previous prime is 1421328376927. The next prime is 1421328376981. The reversal of 1421328376976 is 6796738231241.

It can be written as a sum of positive squares in 8 ways, for example, as 30164742400 + 1391163634576 = 173680^2 + 1179476^2 .

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, 110680316 + ... + 110693156.

It is an arithmetic number, because the mean of its divisors is an integer number (35873966475).

Almost surely, 2^{1421328376976} is an apocalyptic number.

1421328376976 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 1421328376976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1434958659000).

1421328376976 is an abundant number, since it is smaller than the sum of its proper divisors (1448588941024).

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

1421328376976 is a wasteful number, since it uses less digits than its factorization.

1421328376976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14628 (or 14622 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 59.

The spelling of 1421328376976 in words is "one trillion, four hundred twenty-one billion, three hundred twenty-eight million, three hundred seventy-six thousand, nine hundred seventy-six".