401432542512 has 160 divisors (see below), whose sum is σ = 1081334790144. Its totient is φ = 128209536000.

The previous prime is 401432542501. The next prime is 401432542547. The reversal of 401432542512 is 215245234104.

It is a super-2 number, since 2×401432542512² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164049673 + ... + 164052119.

Almost surely, 2^401432542512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401432542512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540667395072).

401432542512 is an abundant number, since it is smaller than the sum of its proper divisors (679902247632).

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

401432542512 is a wasteful number, since it uses less digits than its factorization.

401432542512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867 (or 3861 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 401432542512 its reverse (215245234104), we get a palindrome (616677776616).

The spelling of 401432542512 in words is "four hundred one billion, four hundred thirty-two million, five hundred forty-two thousand, five hundred twelve".