39951957011 has 2 divisors, whose sum is σ = 39951957012. Its totient is φ = 39951957010.

The previous prime is 39951956983. The next prime is 39951957013. The reversal of 39951957011 is 11075915993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39951957011 - 2¹⁴ = 39951940627 is a prime.

Together with 39951957013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39951957013) 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, 19975978505 + 19975978506.

It is an arithmetic number, because the mean of its divisors is an integer number (19975978506).

Almost surely, 2^39951957011 is an apocalyptic number.

39951957011 is a deficient number, since it is larger than the sum of its proper divisors (1).

39951957011 is an equidigital number, since it uses as much as digits as its factorization.

39951957011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 382725, while the sum is 50.

The spelling of 39951957011 in words is "thirty-nine billion, nine hundred fifty-one million, nine hundred fifty-seven thousand, eleven".