40045313551 has 2 divisors, whose sum is σ = 40045313552. Its totient is φ = 40045313550.

The previous prime is 40045313533. The next prime is 40045313629. The reversal of 40045313551 is 15531354004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40045313551 - 2⁵ = 40045313519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40045313051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20022656775 + 20022656776.

It is an arithmetic number, because the mean of its divisors is an integer number (20022656776).

Almost surely, 2^40045313551 is an apocalyptic number.

40045313551 is a deficient number, since it is larger than the sum of its proper divisors (1).

40045313551 is an equidigital number, since it uses as much as digits as its factorization.

40045313551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 40045313551 its reverse (15531354004), we get a palindrome (55576667555).

The spelling of 40045313551 in words is "forty billion, forty-five million, three hundred thirteen thousand, five hundred fifty-one".