400452102325520 has 80 divisors (see below), whose sum is σ = 1064558239090560. Its totient is φ = 137233373878272.

The previous prime is 400452102325501. The next prime is 400452102325537. The reversal of 400452102325520 is 25523201254004.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166748822 + ... + 169133301.

It is an arithmetic number, because the mean of its divisors is an integer number (13306977988632).

Almost surely, 2^{400452102325520} is an apocalyptic number.

400452102325520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400452102325520 is an abundant number, since it is smaller than the sum of its proper divisors (664106136765040).

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

400452102325520 is a wasteful number, since it uses less digits than its factorization.

400452102325520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335884272 (or 335884266 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 400452102325520 its reverse (25523201254004), we get a palindrome (425975303579524).

The spelling of 400452102325520 in words is "four hundred trillion, four hundred fifty-two billion, one hundred two million, three hundred twenty-five thousand, five hundred twenty".