1401287723600 has 120 divisors (see below), whose sum is σ = 3534523127232. Its totient is φ = 532855065600.

The previous prime is 1401287723551. The next prime is 1401287723609. The reversal of 1401287723600 is 63277821041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401287723609) 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, 1032380 + ... + 1966820.

Almost surely, 2^{1401287723600} is an apocalyptic number.

1401287723600 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 1401287723600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1767261563616).

1401287723600 is an abundant number, since it is smaller than the sum of its proper divisors (2133235403632).

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

1401287723600 is a wasteful number, since it uses less digits than its factorization.

1401287723600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934645 (or 934634 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 1401287723600 in words is "one trillion, four hundred one billion, two hundred eighty-seven million, seven hundred twenty-three thousand, six hundred".