401489745504 has 48 divisors (see below), whose sum is σ = 1065752296560. Its totient is φ = 132326205440.

The previous prime is 401489745463. The next prime is 401489745521. The reversal of 401489745504 is 405547984104.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×401489745504² (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, 23486877 + ... + 23503964.

It is an arithmetic number, because the mean of its divisors is an integer number (22203172845).

Almost surely, 2^401489745504 is an apocalyptic number.

It is an amenable number.

401489745504 is an abundant number, since it is smaller than the sum of its proper divisors (664262551056).

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

401489745504 is a wasteful number, since it uses less digits than its factorization.

401489745504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46990943 (or 46990935 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 401489745504 in words is "four hundred one billion, four hundred eighty-nine million, seven hundred forty-five thousand, five hundred four".