451555440043 has 4 divisors (see below), whose sum is σ = 451558977768. Its totient is φ = 451551902320.

The previous prime is 451555440013. The next prime is 451555440107. The reversal of 451555440043 is 340044555154.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451555440043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 451555439978 and 451555440005.

It is not an unprimeable number, because it can be changed into a prime (451555440013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1569946 + ... + 1835167.

It is an arithmetic number, because the mean of its divisors is an integer number (112889744442).

Almost surely, 2^451555440043 is an apocalyptic number.

451555440043 is a deficient number, since it is larger than the sum of its proper divisors (3537725).

451555440043 is a wasteful number, since it uses less digits than its factorization.

451555440043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3537724.

The product of its (nonzero) digits is 480000, while the sum is 40.

Adding to 451555440043 its reverse (340044555154), we get a palindrome (791599995197).

The spelling of 451555440043 in words is "four hundred fifty-one billion, five hundred fifty-five million, four hundred forty thousand, forty-three".