401289532530 has 128 divisors (see below), whose sum is σ = 1027779895296. Its totient is φ = 100106496000.

The previous prime is 401289532529. The next prime is 401289532531. The reversal of 401289532530 is 35235982104.

It is an interprime number because it is at equal distance from previous prime (401289532529) and next prime (401289532531).

It is a super-2 number, since 2×401289532530² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401289532531) 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, 3827305 + ... + 3930755.

It is an arithmetic number, because the mean of its divisors is an integer number (8029530432).

Almost surely, 2^401289532530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401289532530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513889947648).

401289532530 is an abundant number, since it is smaller than the sum of its proper divisors (626490362766).

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

401289532530 is a wasteful number, since it uses less digits than its factorization.

401289532530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103632.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 401289532530 in words is "four hundred one billion, two hundred eighty-nine million, five hundred thirty-two thousand, five hundred thirty".