40251224399 has 2 divisors, whose sum is σ = 40251224400. Its totient is φ = 40251224398.

The previous prime is 40251224347. The next prime is 40251224471. The reversal of 40251224399 is 99342215204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40251224399 is a prime.

It is a super-2 number, since 2×40251224399² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40251224999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20125612199 + 20125612200.

It is an arithmetic number, because the mean of its divisors is an integer number (20125612200).

Almost surely, 2^40251224399 is an apocalyptic number.

40251224399 is a deficient number, since it is larger than the sum of its proper divisors (1).

40251224399 is an equidigital number, since it uses as much as digits as its factorization.

40251224399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 40251224399 in words is "forty billion, two hundred fifty-one million, two hundred twenty-four thousand, three hundred ninety-nine".