40985347951 has 2 divisors, whose sum is σ = 40985347952. Its totient is φ = 40985347950.

The previous prime is 40985347877. The next prime is 40985347981. The reversal of 40985347951 is 15974358904.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40985347951 - 2⁹ = 40985347439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40985347892 and 40985347901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40985347981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20492673975 + 20492673976.

It is an arithmetic number, because the mean of its divisors is an integer number (20492673976).

Almost surely, 2^40985347951 is an apocalyptic number.

40985347951 is a deficient number, since it is larger than the sum of its proper divisors (1).

40985347951 is an equidigital number, since it uses as much as digits as its factorization.

40985347951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 40985347951 in words is "forty billion, nine hundred eighty-five million, three hundred forty-seven thousand, nine hundred fifty-one".