451221351232 has 56 divisors (see below), whose sum is σ = 899411228352. Its totient is φ = 224599910400.

The previous prime is 451221351223. The next prime is 451221351241. The reversal of 451221351232 is 232153122154.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (451221351223) and next prime (451221351241).

It is a junction number, because it is equal to n+sod(n) for n = 451221351194 and 451221351203.

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, 16128168 + ... + 16156120.

It is an arithmetic number, because the mean of its divisors is an integer number (16060914792).

Almost surely, 2^451221351232 is an apocalyptic number.

It is an amenable number.

451221351232 is a deficient number, since it is larger than the sum of its proper divisors (448189877120).

451221351232 is a wasteful number, since it uses less digits than its factorization.

451221351232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29087 (or 29077 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

Adding to 451221351232 its reverse (232153122154), we get a palindrome (683374473386).

The spelling of 451221351232 in words is "four hundred fifty-one billion, two hundred twenty-one million, three hundred fifty-one thousand, two hundred thirty-two".