401500237440 has 64 divisors (see below), whose sum is σ = 1279782012960. Its totient is φ = 107066729472.

The previous prime is 401500237409. The next prime is 401500237499. The reversal of 401500237440 is 44732005104.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×401500237440² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 401500237398 and 401500237407.

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, 104555434 + ... + 104559273.

Almost surely, 2^401500237440 is an apocalyptic number.

401500237440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401500237440 is an abundant number, since it is smaller than the sum of its proper divisors (878281775520).

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

401500237440 is a wasteful number, since it uses less digits than its factorization.

401500237440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209114729 (or 209114717 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The spelling of 401500237440 in words is "four hundred one billion, five hundred million, two hundred thirty-seven thousand, four hundred forty".