1401589163520 has 2160 divisors, whose sum is σ = 6362721853488. Its totient is φ = 293462507520.

The previous prime is 1401589163489. The next prime is 1401589163537. The reversal of 1401589163520 is 253619851041.

It is a happy number.

1401589163520 is a `hidden beast` number, since 1 + 4 + 0 + 1 + 5 + 8 + 9 + 1 + 635 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2160).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 10699153855 + ... + 10699153985.

Almost surely, 2^{1401589163520} is an apocalyptic number.

1401589163520 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 1401589163520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3181360926744).

1401589163520 is an abundant number, since it is smaller than the sum of its proper divisors (4961132689968).

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

1401589163520 is an frugal number, since it uses more digits than its factorization.

1401589163520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 1401589163520 in words is "one trillion, four hundred one billion, five hundred eighty-nine million, one hundred sixty-three thousand, five hundred twenty".