40515505573 has 2 divisors, whose sum is σ = 40515505574. Its totient is φ = 40515505572.

The previous prime is 40515505549. The next prime is 40515505603. The reversal of 40515505573 is 37550551504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26425103364 + 14090402209 = 162558^2 + 118703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40515505573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40515505073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20257752786 + 20257752787.

It is an arithmetic number, because the mean of its divisors is an integer number (20257752787).

Almost surely, 2^40515505573 is an apocalyptic number.

It is an amenable number.

40515505573 is a deficient number, since it is larger than the sum of its proper divisors (1).

40515505573 is an equidigital number, since it uses as much as digits as its factorization.

40515505573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262500, while the sum is 40.

The spelling of 40515505573 in words is "forty billion, five hundred fifteen million, five hundred five thousand, five hundred seventy-three".