40505525651 has 2 divisors, whose sum is σ = 40505525652. Its totient is φ = 40505525650.

The previous prime is 40505525639. The next prime is 40505525659. The reversal of 40505525651 is 15652550504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40505525651 - 2²² = 40501331347 is a prime.

It is not a weakly prime, because it can be changed into another prime (40505525659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20252762825 + 20252762826.

It is an arithmetic number, because the mean of its divisors is an integer number (20252762826).

Almost surely, 2^40505525651 is an apocalyptic number.

40505525651 is a deficient number, since it is larger than the sum of its proper divisors (1).

40505525651 is an equidigital number, since it uses as much as digits as its factorization.

40505525651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 40505525651 in words is "forty billion, five hundred five million, five hundred twenty-five thousand, six hundred fifty-one".