401550032540 has 24 divisors (see below), whose sum is σ = 843270600480. Its totient is φ = 160617054528.

The previous prime is 401550032537. The next prime is 401550032557. The reversal of 401550032540 is 45230055104.

It is a super-2 number, since 2×401550032540² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1170329 + ... + 1474031.

It is an arithmetic number, because the mean of its divisors is an integer number (35136275020).

Almost surely, 2^401550032540 is an apocalyptic number.

It is an amenable number.

401550032540 is an abundant number, since it is smaller than the sum of its proper divisors (441720567940).

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

401550032540 is a wasteful number, since it uses less digits than its factorization.

401550032540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369821 (or 369819 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 401550032540 its reverse (45230055104), we get a palindrome (446780087644).

The spelling of 401550032540 in words is "four hundred one billion, five hundred fifty million, thirty-two thousand, five hundred forty".