401540335320 has 64 divisors (see below), whose sum is σ = 1212011377920. Its totient is φ = 106420500864.

The previous prime is 401540335307. The next prime is 401540335337. The reversal of 401540335320 is 23533045104.

It is a super-2 number, since 2×401540335320² (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 congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10244764 + ... + 10283883.

It is an arithmetic number, because the mean of its divisors is an integer number (18937677780).

Almost surely, 2^401540335320 is an apocalyptic number.

401540335320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401540335320 is an abundant number, since it is smaller than the sum of its proper divisors (810471042600).

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

401540335320 is a wasteful number, since it uses less digits than its factorization.

401540335320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20528824 (or 20528820 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

The spelling of 401540335320 in words is "four hundred one billion, five hundred forty million, three hundred thirty-five thousand, three hundred twenty".