1401491489280 has 480 divisors, whose sum is σ = 4913220533760. Its totient is φ = 340383498240.

The previous prime is 1401491489261. The next prime is 1401491489323. The reversal of 1401491489280 is 829841941041.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 68794936 + ... + 68815304.

It is an arithmetic number, because the mean of its divisors is an integer number (10235876112).

Almost surely, 2^{1401491489280} is an apocalyptic number.

1401491489280 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 1401491489280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2456610266880).

1401491489280 is an abundant number, since it is smaller than the sum of its proper divisors (3511729044480).

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

1401491489280 is a wasteful number, since it uses less digits than its factorization.

1401491489280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20460 (or 20427 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 51.

The spelling of 1401491489280 in words is "one trillion, four hundred one billion, four hundred ninety-one million, four hundred eighty-nine thousand, two hundred eighty".