40244487451 has 4 divisors (see below), whose sum is σ = 45993699952. Its totient is φ = 34495274952.

The previous prime is 40244487443. The next prime is 40244487473. The reversal of 40244487451 is 15478444204.

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

It is a cyclic number.

It is not a de Polignac number, because 40244487451 - 2³ = 40244487443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40244487398 and 40244487407.

It is not an unprimeable number, because it can be changed into a prime (40244487421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2874606240 + ... + 2874606253.

It is an arithmetic number, because the mean of its divisors is an integer number (11498424988).

Almost surely, 2^40244487451 is an apocalyptic number.

40244487451 is a deficient number, since it is larger than the sum of its proper divisors (5749212501).

40244487451 is an equidigital number, since it uses as much as digits as its factorization.

40244487451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5749212500.

The product of its (nonzero) digits is 573440, while the sum is 43.

The spelling of 40244487451 in words is "forty billion, two hundred forty-four million, four hundred eighty-seven thousand, four hundred fifty-one".