40320412004251 has 2 divisors, whose sum is σ = 40320412004252. Its totient is φ = 40320412004250.

The previous prime is 40320412004207. The next prime is 40320412004317. The reversal of 40320412004251 is 15240021402304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40320412004251 - 2²⁹ = 40319875133339 is a prime.

It is not a weakly prime, because it can be changed into another prime (40320412004651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20160206002125 + 20160206002126.

It is an arithmetic number, because the mean of its divisors is an integer number (20160206002126).

Almost surely, 2^{40320412004251} is an apocalyptic number.

40320412004251 is a deficient number, since it is larger than the sum of its proper divisors (1).

40320412004251 is an equidigital number, since it uses as much as digits as its factorization.

40320412004251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 40320412004251 its reverse (15240021402304), we get a palindrome (55560433406555).

The spelling of 40320412004251 in words is "forty trillion, three hundred twenty billion, four hundred twelve million, four thousand, two hundred fifty-one".