451681023442 has 16 divisors (see below), whose sum is σ = 739184140512. Its totient is φ = 205290184320.

The previous prime is 451681023419. The next prime is 451681023463. The reversal of 451681023442 is 244320186154.

It is a happy number.

It is a super-2 number, since 2×451681023442² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 451681023395 and 451681023404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 728808 + ... + 1197715.

It is an arithmetic number, because the mean of its divisors is an integer number (46199008782).

Almost surely, 2^451681023442 is an apocalyptic number.

451681023442 is a deficient number, since it is larger than the sum of its proper divisors (287503117070).

451681023442 is a wasteful number, since it uses less digits than its factorization.

451681023442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937193.

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 451681023442 in words is "four hundred fifty-one billion, six hundred eighty-one million, twenty-three thousand, four hundred forty-two".