40490006651 has 2 divisors, whose sum is σ = 40490006652. Its totient is φ = 40490006650.

The previous prime is 40490006597. The next prime is 40490006663. The reversal of 40490006651 is 15660009404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40490006651 - 2¹⁸ = 40489744507 is a prime.

It is not a weakly prime, because it can be changed into another prime (40490006681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20245003325 + 20245003326.

It is an arithmetic number, because the mean of its divisors is an integer number (20245003326).

Almost surely, 2^40490006651 is an apocalyptic number.

40490006651 is a deficient number, since it is larger than the sum of its proper divisors (1).

40490006651 is an equidigital number, since it uses as much as digits as its factorization.

40490006651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 40490006651 in words is "forty billion, four hundred ninety million, six thousand, six hundred fifty-one".