40051551329 has 2 divisors, whose sum is σ = 40051551330. Its totient is φ = 40051551328.

The previous prime is 40051551317. The next prime is 40051551367. The reversal of 40051551329 is 92315515004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30075536929 + 9976014400 = 173423^2 + 99880^2 .

It is a cyclic number.

It is not a de Polignac number, because 40051551329 - 2²⁸ = 39783115873 is a prime.

It is not a weakly prime, because it can be changed into another prime (40051551389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20025775664 + 20025775665.

It is an arithmetic number, because the mean of its divisors is an integer number (20025775665).

Almost surely, 2^40051551329 is an apocalyptic number.

It is an amenable number.

40051551329 is a deficient number, since it is larger than the sum of its proper divisors (1).

40051551329 is an equidigital number, since it uses as much as digits as its factorization.

40051551329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 40051551329 in words is "forty billion, fifty-one million, five hundred fifty-one thousand, three hundred twenty-nine".