1401531548118 has 128 divisors (see below), whose sum is σ = 3371919667200. Its totient is φ = 384156888192.

The previous prime is 1401531548113. The next prime is 1401531548173. The reversal of 1401531548118 is 8118451351041.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1401531548118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401531548113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1662621 + ... + 2359527.

It is an arithmetic number, because the mean of its divisors is an integer number (26343122400).

Almost surely, 2^{1401531548118} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401531548118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1685959833600).

1401531548118 is an abundant number, since it is smaller than the sum of its proper divisors (1970388119082).

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

1401531548118 is a wasteful number, since it uses less digits than its factorization.

1401531548118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697026.

The product of its (nonzero) digits is 76800, while the sum is 42.

Adding to 1401531548118 its reverse (8118451351041), we get a palindrome (9519982899159).

The spelling of 1401531548118 in words is "one trillion, four hundred one billion, five hundred thirty-one million, five hundred forty-eight thousand, one hundred eighteen".