401553532000 has 192 divisors, whose sum is σ = 1047476888640. Its totient is φ = 150764544000.

The previous prime is 401553531989. The next prime is 401553532021. The reversal of 401553532000 is 235355104.

It is a super-2 number, since 2×401553532000² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401553532000.

It is a congruent number.

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, 25764210 + ... + 25779790.

It is an arithmetic number, because the mean of its divisors is an integer number (5455608795).

Almost surely, 2^401553532000 is an apocalyptic number.

401553532000 is a gapful number since it is divisible by the number (40) 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 401553532000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523738444320).

401553532000 is an abundant number, since it is smaller than the sum of its proper divisors (645923356640).

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

401553532000 is a wasteful number, since it uses less digits than its factorization.

401553532000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16002 (or 15984 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

Adding to 401553532000 its reverse (235355104), we get a palindrome (401788887104).

The spelling of 401553532000 in words is "four hundred one billion, five hundred fifty-three million, five hundred thirty-two thousand".