401551237642452 has 24 divisors (see below), whose sum is σ = 954631244208096. Its totient is φ = 131324933065248.

The previous prime is 401551237642441. The next prime is 401551237642459. The reversal of 401551237642452 is 254246732155104.

It is a super-2 number, since 2×401551237642452² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401551237642395 and 401551237642404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401551237642459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315684934618 + ... + 315684935889.

It is an arithmetic number, because the mean of its divisors is an integer number (39776301842004).

Almost surely, 2^{401551237642452} is an apocalyptic number.

It is an amenable number.

401551237642452 is an abundant number, since it is smaller than the sum of its proper divisors (553080006565644).

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

401551237642452 is a wasteful number, since it uses less digits than its factorization.

401551237642452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631369870567 (or 631369870565 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 51.

Adding to 401551237642452 its reverse (254246732155104), we get a palindrome (655797969797556).

The spelling of 401551237642452 in words is "four hundred one trillion, five hundred fifty-one billion, two hundred thirty-seven million, six hundred forty-two thousand, four hundred fifty-two".