240020415451 has 8 divisors (see below), whose sum is σ = 250482587040. Its totient is φ = 229560452352.

The previous prime is 240020415433. The next prime is 240020415491. The reversal of 240020415451 is 154514020042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 240020415451 - 2⁵ = 240020415419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240020415491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328086 + ... + 766603.

It is an arithmetic number, because the mean of its divisors is an integer number (31310323380).

Almost surely, 2^240020415451 is an apocalyptic number.

240020415451 is a deficient number, since it is larger than the sum of its proper divisors (10462171589).

240020415451 is a wasteful number, since it uses less digits than its factorization.

240020415451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104245.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 240020415451 its reverse (154514020042), we get a palindrome (394534435493).

The spelling of 240020415451 in words is "two hundred forty billion, twenty million, four hundred fifteen thousand, four hundred fifty-one".