1401571120026 has 128 divisors (see below), whose sum is σ = 3692052080640. Its totient is φ = 343638547200.

The previous prime is 1401571120021. The next prime is 1401571120043. The reversal of 1401571120026 is 6200211751041.

It is a junction number, because it is equal to n+sod(n) for n = 1401571119975 and 1401571120002.

It is not an unprimeable number, because it can be changed into a prime (1401571120021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2143296 + ... + 2719716.

It is an arithmetic number, because the mean of its divisors is an integer number (28844156880).

Almost surely, 2^{1401571120026} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401571120026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1846026040320).

1401571120026 is an abundant number, since it is smaller than the sum of its proper divisors (2290480960614).

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

1401571120026 is a wasteful number, since it uses less digits than its factorization.

1401571120026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576740.

The product of its (nonzero) digits is 3360, while the sum is 30.

Adding to 1401571120026 its reverse (6200211751041), we get a palindrome (7601782871067).

The spelling of 1401571120026 in words is "one trillion, four hundred one billion, five hundred seventy-one million, one hundred twenty thousand, twenty-six".