451801165438 has 32 divisors (see below), whose sum is σ = 793572240384. Its totient is φ = 188891924832.

The previous prime is 451801165369. The next prime is 451801165447. The reversal of 451801165438 is 834561108154.

It is a super-2 number, since 2×451801165438² (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 15 ways as a sum of consecutive naturals, for example, 916281 + ... + 1320292.

It is an arithmetic number, because the mean of its divisors is an integer number (24799132512).

Almost surely, 2^451801165438 is an apocalyptic number.

451801165438 is a deficient number, since it is larger than the sum of its proper divisors (341771074946).

451801165438 is a wasteful number, since it uses less digits than its factorization.

451801165438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236936.

The product of its (nonzero) digits is 460800, while the sum is 46.

The spelling of 451801165438 in words is "four hundred fifty-one billion, eight hundred one million, one hundred sixty-five thousand, four hundred thirty-eight".